The extension kit for C-channel belt drive garage door opener rails is to be used in addition to a 7' (3-piece) chain rail to accommodate an 8' high door
For Genie silent max 1000 and quiet lift 1200 belt-drive garage door openers only
The Genie Master Belt Drive Extension Kit is an extension for C-channel and T-type rails to be used in addition to the 7 ft. (3-piece) rail to accommodate an 8 ft. high door.
The extension kit is designed specifically for Genie belt drive openers.
Belt and instructions included
Compatible Genie SilentMax 1200 SilentMax 1000 QuietLift 800 and BeltLift
The extension kit for C-channel chain drive garage door opener rails is to be used in addition to a 7' (3-piece) chain rail to accommodate an 8' high door