New. 

An extension kit will extend the 3 piece, belt drive C-Channel rail for a 7' high door to accommodate an 8' high door. This kit is designed specifically for Genie belt drive openers.

• Compatible with Models: 3042, 3142, 4042, SilentMax 1000, SilentMax 1200        
• For specific model information please see the plate on the operator's head 
• Includes rail extension, belt, and hardware to install
• This kit allows opener to fully open garage doors up to 8ft. high 
• Model EKBC