Devanco Canada

 
User Name:
Password:
Remember Me:
Forgot your password
Request a Login

SPRING026

Manaras Trolley Arm Disconnect Spring MGH

EP2978

Exhaust Port 3" long barrel

  • For use on insulated door panels up to 2" thick.
  • Inside diameter: 3" Includes fasteners & gaskets.
  • Outside diameter: 3-3/8"
  • Flange: 4-15/16"
  • Sleeve: 2"
  • Polished aluminum finish.
27-24200

Truck Door Single Torsion Spring Assembly 96/60 for Todco Roll-Up Doors

  • Single counterbalanced spring design available in 36" 48" and 60" spring lengths.
  • Shaft Length: 96" Spring Length: 60" Wire Size: .243
  • Quick and easy counterbalance spring adjustment with easy calibration to door size and weight for effortless operation.
  • Springs treated with rust preventative
  • Heavy .243 dia. spring wire
  • Heavy-duty cast aluminum cable drums hold up to 130" of cable
  • .......more details
.218-325-DS75

Mini Storage Spring for DS75 4x7 Door

  • Spring only with loop ends
Q239

LiftMaster Limit Switch Wire Harness K70-51094 **DISCONTINUED

  • Includes harness and 4 limit switches for Miracle One
BCH751L5-LH

LiftMaster Hoist Op. with Carwash Mod. and Brake 3/4 HP 115/230 VAC Logic 5 Left Hand ***Replaced by CRBH751-LH

  • Industrial Duty Hoist Operator with Damp Environment modification.
  • Comes with either CPS-UN4
  • Brake installed on operator
1058050002

Overhead Limit Cam Snap On for OHD Chain Model

  • For Overhead models #456 #551 #556 and the #65 series
  • Also called Limit Actuator
  • 105805-0002
SNACPH32

LiftMaster HID 30-bit Proximity Card Facility Code 2 *Discontinued*

  • Same as SN000099-30-2
  • Compatible with KPR2000 reader
  • Replaced by LMPC2-SN (need to know facility code)
226-9313

Lithium AA 3.6V Battery

  • Used in various types of photo eyes
K75-34791

LiftMaster Clutch Kit for SL585

  • Kit includes: Clutch disk Clutch plate Torque Limiter Hub Sprocket Washer E-Rings Nut Bearings and Compression spring
K72-13058

LiftMaster Intermediate Shaft Kit APT

  • Kit contains: Shaft Bearings Roll Pins Washers and Sprockets (41B10 x 3/4" & 41B16 x 3/4")
HTRNB

LiftMaster Heater Kit for AC Pad Mount Gate Operators

  • Heater kit for pad mount AC gate operators.
  • Battery bracket NOT included.
  • Protects system to -40° F and installs on operator frame
  • Measurements: 6 x 2 3/8 x 3 3/8
K001D8395

LiftMaster Logic 5 Board Kit - all voltages L5

  • The K001D8395 is a 1 Phase and 3 Phase L5 logic board replacement kit.
  • This kit is compatible with LiftMaster® 3 Phase Commercial Door Operators manufactured after April 2016 only.
  • This L5 logic board is Current Sense compatible.
  • All 3 Phase operators made after April 2016 will require this board.
  • For 3 Phase operators that require the Current Sense Harness use part number K21-38158
41D0843

LiftMaster Replacement Motor and Sensor 12VDC

  • For Craftsman garage door opener
OTBH-6213-AE05

Manaras Trolley Operator 3/4 HP 240V 1Ph with Elect. Circuit Board Apt. Model

  • A premium low headroom apartment type operator designed for use on industrial standard lift sectional doors with high daily use requirements
  • 30 cycles per hour 100 cycles per day
  • It incorporates a drum-shoe type solenoid brake.
  • Tracks are an extra 36 lbs per track
  • 3/4 HP & 1 HP operators come with #41 full roller chain
6944.1

Whiting Top Closure Assembly Stainless Steel Dry Freight

  • This is a Whiting original part
5735.96

Whiting Bottom Seal Grey 96"

  • For Dry Freight and Truss Doors
GAREX-SPEC-ORDR

Garex Light Commercial Door Special Order

  • specify size color details when ordering
  • Please call for pricing
28020004-500

Cable Stainless 1/16" 1x19 500' Inox *** Price on Request

  • Not for use in aircraft applications
  • 1x19 contruction type 302 / 304
PS243F

Adjustable DC Power Supply 6V/12/24V 3 AMP

  • 3 preset output voltages : 6/12 and 24VDC (an adjustable mode is also available with a jumper setting)
  • Full adjustment from 2 to 24VDC if required
  • Maximum 3 amp (Output at 70 deg. F and free air)
  • Regulation:97.5%
  • Maximum input voltage 36 volts
  • Fuse protected
  • .......more details
K74-30754

LiftMaster Battery Harness 1 unit only

  • For LA400
  • 2 harnesses required per operator- 1 for each battery
JRGX114

Chain Hoist Jack Shaft JRG V2 1-1/4" Shaft Torque Force (126690)

  • Jack Shaft Mounting plastic guide 4.5:1 reduction
  • Gear drive
  • Fits 3-3/8" minimum offset
  • Includes: 26' of galvanized hand chain - doors higher than 15' require additional hand chain
  • 1 chain keeper
  • 2 shaft collars
  • .......more details
DL-4000-8

Dock Leveler Retainer Galv. Steel Weldable 8' Long

  • Weldable to sides of dock leveler
  • Use with 4007 aluminum retainer & light brush (not included).
  • Vinyl insert slides into this outer retainer.
65_52091-14

LiftMaster Manual Hoist Mod. M8 #41 Chain for 14ft High Door

  • For 3/4 Hp & 1 Hp Trolley operators
  • Includes floor level brake release cable 1" x 12' round bar.
OSH-6113-CONT-L

Manaras Opera-SH 3/4HP 120V 1Ph with Contactor Left Hand

  • An ultra high-end heavy-duty V-belt drive industrial jackshaft operator
  • For use on Standard High and Vertical Lift sectional doors
  • Can also be used on Rolling doors and Grilles
  • Comes with a chain hoist for manual operation and a floor level engaging device
  • Clearence: side room required 16"
  • 25 cycles per day > 100 cycles per day
  • .......more details
Q074

LiftMaster Coupling (3/4 x 5/8) 3 pcs K75-50130

  • Fits model HCT
  • Same as K75-50130
DS75

Light Commercial Non-Insulated Rollup Door with Exterior Curtain Lock ** Price by Quote Only

  • Mini Storage door non insulated with exterior curtain lock
  • Custom ordered to exact size
124844

1" Nylon Bushing

K20-1050B2LPH24

LiftMaster Electric Motor 1/2 HP 115V 1Ph Logic 5

  • Standard 1/2 hp motor for new L5 operators
ST-CLEAR-TUBE

Soft Touch Clear Tubing Sold per Foot

27-8004-K

LiftMaster Aux. Contact Block Relay

  • 2-NO/ 2-NC Contacts
  • Used on 03-8024K contactor
90_9210MO

LiftMaster Auxiliary Limit Switch Mod M62 Open Factory Installed

  • Provides a limit switch for use by others to control auxiliary devices such as lights heaters dock levelers or other equipment.
  • The switch can be used to turn on or off such equipment when the door is fully opened or fully closed.
  • When ordering specify whether the auxiliary switch is required on the OPEN or CLOSE side of the control enclosure.
  • A maximum of 2 switches per operator can be supplied.
  • Each switch is SPDT (form C) and is rated 10 amps at 125/250 VAC
  • Wire leads are provided on field install kits
  • .......more details
CP-LX720

Lynx 3-btn O/C/S Transmitter 372 MHz for Commercial Op. with UL325 Board

  • UL325
  • Works on the new Lynx commercial operators
  • Open Close Stop transmitter
  • Not compatible with the 372MHz residential operators.
CLUTCH-ASY-MCJH

Lynx Complete Clutch Shaft Assembly for MCJH Operators 5/8" x 12-1/2"

111854.0001

Overhead Logic Board for RSX 1/2 Hp 115V

  • Description: KITPCB1PH1/2HPSX/HXUL10
  • For RSX ad RHX models 1/2 Hp Single phase operators
41D7675

LiftMaster Receiver Logic Board 2.0

  • Also known as: 45ACT
OSH-6233-CONT-L

Manaras Opera-SH 3/4 HP 208V 3 Ph Contactor Left Hand

  • An ultra high-end heavy-duty V-belt drive industrial jackshaft operator
  • For use on Standard High and Vertical Lift sectional doors
  • Can also be used on Rolling doors and Grilles
  • Comes with a chain hoist for manual operation and a floor level engaging device
  • Clearence: side room required 16"
  • 25 cycles per day > 100 cycles per day
  • .......more details
.262-258-R

Cut-to-Length Torsion Spring .262 x 2-5/8" Right Hand Wound Red/Yellow

  • Priced per inch - cones sold seperately
  • For factory installed cones use part no. C-258-INSTALLED
LM21XPBB

LiftMaster Extended Performance Fire Door Release Device with Battery Backup

  • UL864 Revision 9 compliant
  • Programmable DIP switch delay setting - either 10 20 30 or 60 seconds delay of door release to permit passage clearance
  • Inputs for normally open 2- or 4-wire detectors and 4-wire normally closed detectors
  • Trouble and alarm relays for communication with the fire alarm control panel if required
  • Audible trouble sounder to indicate when the release device is not operational
  • On board diagnostic LEDs for easy troubleshooting
  • .......more details
41B591

LiftMaster Replacement Battery Kit for 475LMC 2/pk

  • For 475LM Battery Back Up Units only
  • Used only on the following LiftMaster models: 2500 3500 3800 & 8500
BIG-METRO-1PKG

NICE Big-Metro Single Arm Kit

  • For swing gates with leaves up to 5 m
  • Underground installation.
  • BM5024 Motor: Irreversible 24 Vdc with magnetic encoder complete with connecting lever and mechanical stop for the closing manoeuvre.
  • Compatible with 2 foundation metro boxes externally chamfered with mechanical stop on opening: in stainless steel (BMBOXI) ideal for use in extreme conditions and with the new cataphoresis paint finish (BMBOX) highly resistant to corrosion.
  • Maximum freedom of choice: release from inside or outside two key or lever operated models freely combinable and easy to operate with just one hand.
  • Recommended control unit: Moonclever MC824H Features: Simple programming by means of a single key;
  • .......more details
3BXT

Control Station Exterior Surface Mount O/C/S N4 Non-Metallic

  • Double pole contacts
  • H=5-3/4" W=2-3/4" D=2-1/2"
  • UL Listed CSA Approved
K75-34790

LiftMaster Disconnect Kit for SL585

  • Kit includes: Release lever bracket cable compression spring washer screws clevis pin bushings roll pin bolts nuts & handle
PEDALU42-HOOD

Aluminum Hood Only No Post for PEDALU42

  • Hood only No post
  • High quality aluminum
  • Boitier pied estau seulement en aluminum
MK-00004

Micanan Travel Limit Switch

9372054125

Square Torsion Spring .343 x 5-1/4 x 41.25" with Cones LHW

  • 41.25" long = 160 coils
41A5507-B

LiftMaster Receiver Logic Board for 2500 (390 Mhz) ** Discontinued

  • With end-panel
  • Also known as 41A5507 41A5507B
K1D8052-1CC

LiftMaster Control Board for LA500DC LA400 LA412

  • 014D1270D
EP2986

Exhaust Port 5" non latching long barrel

  • 5" inside diameter 2" sleeve - non latching.
  • Includes fasteners & gaskets.
  • Polished aluminum finish.
JRGX1

Chain Hoist Jack Shaft JRG V2 1" Shaft Torque Force (126689)

  • Jack Shaft Mounting plastic guide 4.5:1 reduction
  • Gear drive
  • Fits 3-3/8" minimum offset
  • Includes: 26' of galvanized hand chain - doors higher than 15' require additional hand chain
  • 1 chain keeper
  • 2 shaft collars
  • .......more details
E041

Rolling Steel Bottom Bar Astragal 679 Sold per Foot

17K

Rolling Steel 2" Flat Continuous Cast Endlock

  • Endlocks are riveted to curtain slats ends of every other slat to prevent slats from shifting laterally and to prevent curtain wear in guides.
  • Continuous endlocks are both ends of every slat.
  • Rivets included with endlocks
7550

Whiting Winding Cone for 2-5/8" ID Spring Wire Roadside (LH)

  • A Whiting original
SLT14-18

Rolling Steel 3" Flat Slat 18-ga Galvanized

SLT4-18

Rolling Steel 3" Crowned Slat 18-ga Galvanized

340.115-CUT

Whiting Top Panel Tongue & Groove 11-1/2" h Cut to Exact Length

  • Primer only
  • Customer to specify exact length
GH151-L5

LiftMaster Gearhead with Brake 1-1/2 HP 115/230V 1P L5

  • Gearhead style commercial door operators employ lubricated gears for heavy industrial high cycle applications.
  • GH-style operators include a floor level chain hoist to ease manual operation in an emergency or power outage.
  • Hoist wheel is easily moved to Right or Left hand side of unit eliminating the need to order right or left hand mounting.
  • MyQ Technology enables you to securely monitor and control your facility operator with your smartphone tablet or computer. Internet Gateway 828LM required.
  • Security +2.0 radio receiver safeguards your facility - with every click a new code is sent to the commercial door operator so the door opens only for you.
  • Timer-To-Close: Conveniently and confidently closes the commercial door automatically after a predetermined amount of time has elapsed for added security and peace of mind.
  • .......more details
GH101-L5

LiftMaster Gearhead with Brake 1 HP 115/230V 1P L5

  • Gearhead style commercial door operators employ lubricated gears for heavy industrial high cycle applications.
  • GH-style operators include a floor level chain hoist to ease manual operation in an emergency or power outage.
  • Hoist wheel is easily moved to Right or Left hand side of unit eliminating the need to order right or left hand mounting.
  • MyQ Technology enables you to securely monitor and control your facility operator with your smartphone tablet or computer. Internet Gateway 828LM required.
  • Security +2.0 radio receiver safeguards your facility - with every click a new code is sent to the commercial door operator so the door opens only for you.
  • Timer-To-Close: Conveniently and confidently closes the commercial door automatically after a predetermined amount of time has elapsed for added security and peace of mind.
  • .......more details
.363-6-LH-C

Torsion Spring .363 x 6" x 144" LH Coated ** Price by Quote Only

  • Black Oxide coating
  • Wire size painted on spring
  • Wire size: .363 ID: 6" Length: 12 ft
.273-3-3/4-RH-C

Torsion Spring .273 x 3-3/4" x 144" RH Coated ** Price by Quote Only

  • Black Oxide coating
  • Wire size painted on spring
  • Wire size: .273 ID: 3-3/4" Length: 12 ft
.225-2-5/8-RH-C

Torsion Spring .225 x 2-5/8" x 144" RH Coated ** Price by Quote Only

  • Black Oxide coating
  • Wire size painted on spring
  • Wire size: .225 ID: 2-5/8" Length: 12 ft
OPH-6113-CONT-R

Manaras Opera-H 3/4HP 120V 1Ph with Mechanical Contactor Right Hand

  • A heavy-duty industrial jackshaft operator
  • For use on Standard High and Vertical Lift sectional doors
  • Can also be used on Rolling doors and Grilles
  • Comes with a self-engaging chain hoist for manual operation
  • Clearence: side room required 15"
41A7276

LiftMaster Wear Pads 4/pkg Square Rail Only

  • Fits square trolley rail only
  • Same as 183A163
19-5814-NP

LiftMaster Trolley Chain Pack #48 for 14ft Door Nickel Plated

  • Chain pack only
OGH-6115-ECB

Manaras 1-1/2 HP 120V 1Ph Gear Head Operator with Elect. Circuit Board

  • A heavy-duty worm gear industrial operator designed for use on industrial standard high and vertical lift sectional doors or rolling doors and grills.
  • Includes a self-engaging chain hoist for manual operation
  • 25 cycles per hour 80 cycles a day
  • Hoist on right side standard can easily be moved to the left in field
  • Full overload protection
  • BRACKET112 must be used for wall mounting
  • .......more details
T753L5

LiftMaster 3/4 HP 208/230/460V 3P Commercial Trolley Operator Logic 5

  • Trolley low profile with brake
  • Suspended from the ceiling the operators are used on sectional overhead doors with standard lift.
  • T operators are directly attached to drive and control the door.
  • MyQ® Technology enables you to securely monitor and control your facility operator and lights with your smartphone tablet or computer for greater peace of mind.
  • Security+ 2.0™ safeguards your facility – with every click a new code is sent to the commercial door operator so the door opens only for you.
LEVER007

Manaras Disconnect Lever for old MJH

  • Works on model MJH - old units
OMH-6112-ECB-LH

Manaras Medium-Duty Jackshaft Op. 1/2 HP 120V with Elect. Circuit Board Left Hand

  • Designed for use on standard high and vertical lift sectional doors
  • Can also be used on small rolling doors and grills
  • Single phase intermittent-duty motor has instant reverse and internal automatic reset thermal overload protection
  • Mechanical brake
  • Hoist-a-matic self-engaging hoist for manual chain operation
  • Hoist on Right Hand is standard
  • .......more details
V1104-WHITE

Replacement Vinyl Only for 1104-White 200ft Roll

  • Sold in 200 ft rolls only
Z9200

Cable Snubbers Sold as a Pair

  • Prevents slack from forming in cables
  • Sold in pairs
20418R

Genie Limit Switch Lead Wire Brown

  • Brown - Used to connect down limit to sequensor
  • For Screw drive models
HSC-600-JAWS

Replacement Jaws for Hand Swager

  • Can be used as replacement jaws for both the HSC-600 hand model and the HSC-600-B bench model
AK-21

Linear Interior Digital Keypad***to extent of inventory

  • The keypad is housed in a rugged plastic enclosure and is designed to be mounted in a standard single-gang electrical box. The die-cast keys have bright easy-to-read yellow graphics.
  • It is supplied with four different plastic snap-on mounting bezels to customize the look of the keypad. The satin-chrome bezel comes factory installed on the keypad. The white ivory & bronze bezels are packaged separately.
  • Up to 480 entry codes from 1 to 6 digits in length can be programmed. They can activate either or both of the relay outputs.
  • Relay #1 has a 5 Amp capacity. Relay #2 has a 1 Amp capacity. The relays can be set for timed or latch-on/latch-off toggle operation per each individual entry code.
  • The on or off toggle state of a relay is maintained even after power interruption. When power is restored to the keypad each relay will assume the state it was in when power was removed.
7140251

FAAC Hydraulic Oil HP2 1 Litre *** To extent of Inventory

TCR-1

Tri-Code Receiver Single Channel ** DISCONTINUED

  • Single channel receiver compatible with Linear Delta Multi-Code and Stanley radios
  • Three position direct connect tabs for commercial and residential garage door openers
OSH-6114-ECB

Manaras Opera-SH 1HP 120V 1Ph with Electronic Circuit Board

  • An ultra high-end heavy-duty V-belt drive industrial jackshaft operator
  • For use on Standard High and Vertical Lift sectional doors
  • Can also be used on Rolling doors and Grilles
  • Comes with a chain hoist for manual operation and a floor level engaging device
  • Clearence: side room required 16"
  • 25 cycles per day > 100 cycles per day
  • .......more details
MA031

LiftMaster Adapter Collars 2/Pkg

  • For use with Mega-Arm padded arm
860LM

LiftMaster Universal Weather Resistant Receiver

  • Weather-resistant for outdoor mounting requirements
  • Provides convenient access to gated communities industrial facilities and commercial sites all with a single transmitter solution
  • Three channels provide expanded remote control capacity: Channel 1 - 50 remotes Channel 2 - 20 remotes Channel 3 - 20 remotes
  • Multiple remote control options available to provide secure access from the safety and convenience of a vehicle
  • Compact design fits most gate and commercial door operators
  • Compatible with 811LM 813LM and all MAX remote controls
  • .......more details
788

Fasteners Hex Nut 5/16-18 1000/Box

RBH501L5-RH

LiftMaster 1/2 HP 115/230 VAC 1 PH Commercial Hoist Operator Logic 5 *** To Extent of Inventory

  • With the addition of the 828LM MyQ technology enables the user to monitor and control their operator and light with their smartphone tablet or computer.
  • Alerts can be received as email or pop-up (push) notifications on a mobile device ensuring the status of your commercial door.
  • Security+ 2.0™ safeguards your facility – with every click a new code is sent to the commercial door operator so the door opens only for you.
  • Brake standard on all RBH operators
  • #48 chain #50 output sprocket chain
  • Box does not include spreader
  • .......more details
EBOX-HHD-7511-R

Complete Control Box for PRO-HHD-7511 with Mechanical Contactor and Timer to Close

SSZP15-1

Solid Shaft 1" Keyed Zinc Plated 15'-1" ** to extent of inventory

RBH751L5-LH

LiftMaster 3/4 HP 115/230 VAC 1 PH Commercial Hoist Operator Logic 5 ***No Longer Available

  • H-style operators include a floor level chain hoist to ease manual operation in an emergency or power outage.
  • The operators are typically mounted to the wall when used with larger sectional overhead doors with vertical or high lift and mounted to the wall or the front of the hood when used with rolling doors and grilles.
  • H operators are attached to the door jackshaft to indirectly drive the door.
  • With the addition of the 828LM MyQ technology enables the user to monitor and control their operator and light with their smartphone tablet or computer.
  • Alerts can be received as email or pop-up (push) notifications on a mobile device ensuring the status of your commercial door.
  • Security+ 2.0™ safeguards your facility – with every click a new code is sent to the commercial door operator so the door opens only for you.
  • .......more details
BC096.2

Whiting ColdSaver Door Bright Stainless Steel Clad

  • Include: Track Balancer Standard Hardware and side top & bottom seals.
  • Replacement for Utility Trailer s/n CS39865
S2TR2641E2M

Erone 2-Channel Master Transmitter 433MHz

  • One master transmitter is required for each multi-user receiver for doing the programming.
  • Range in open space: 850ft or 250 m
  • One 12V lithium battery included
  • Bronze body with yellow buttons.
029-98200

W-Style Replacement Door White Stainless Steel Package 029-98200

  • Replacement door size between 96-1/4" - 98" wide x 90-100" high
  • Painted white
  • Stainless steel package
  • Includes Hinges Rollers and Cable
165-A

Fusible Link For Loads 1 to 30 lbs

  • Length is 2.625" width is .875"
  • Distance between centers is 1.75"
  • Priced per each
  • Fire rated at 165 degrees Fahrenheit
3X6PO50

Devanco Loop 3' x 6' pave-over 50' lead-in

  • Ideal for use on with gravel driveways or surfaces that are to be asphalted
  • Features a twisted lead-in to reduce the chances of interference and false detections.
  • Direct burial loops should be buried approximately 6" deep
94-61180-33-84

Truck Door 2" Steel Roller 6" Stem for Whiting Roll-Up Doors

  • open-bearing roller
K74-34582-1

LiftMaster Plastic E-Box Assembly for LA500CONT

  • Plastic replacement box only
PULLEY014

Manaras Motor Pulley Standard 2" x 5/8" 5L/B

BEA-REMOTE

BEA Falcon Programming Remote

  • Makes it easy to set up and make adjustments to all key parameters of the Falcon motion detector while at ground level
25E10232

Truck Door Mounting Plate for Reefer Top Closure Bracket Black E-coat finish**To Extent of Inventory

  • Used with reefer top closure brackets 25-10230 25-10231
  • Black E-coat finish
CLUTCH-SHAFT-AS

Lynx Complete Clutch Shaft Assembly for HDC Operators 3/4" x 17-1/2"

  • Fits all HDC operators - waterproof or not.
TH827-12V

Erone 7-Day Timer 12V

  • 12V AC/DC input voltage with battery back-up
  • Form 'C' relay
  • Easy to read LCD Display
  • Manual override button
  • Ideal to keep a gate open during the day
24851

Stanley Traveler Carrier Kit

  • Works with all Stanley chain drive units from 1992-present
  • Same as part no. 9200014
  • Trolley slider for part no. 49563
510.5377.00

Whiting Side Seal Option for Dry Freight Door

  • A extra option when ordering a Dry Freight door
  • When purchased alone use part number 5377.115
78236

Marantec Modular Receiver 315 MHz ***available to extent of inventory see details***

  • Only available in 315 MHz. Be sure to check which frequency is required
  • Works with Marantec residential opener models 4500e 4700e 4900e
  • Replaced by 75424 plug-in receiver
CR-2000

EMX Keypad/Card Reader Waterproof 5401-1

  • Back-lit keys for nighttime operation
  • 2000 users (card or passcode)
  • Rugged waterproof design and vandal resistant
  • 9-24 VDC
  • Tamper alarm
  • Door call button
  • .......more details
MB-02202

Micanan Electric Motor Only 3/4HP 575V 3PH

  • Base mount motor fits: T TB APT J EJ H EHJ HHD SD GO MSW