Chamberlain® 8808CB-P Belt Drive Rail Extension Kit for 8' High Garage Doors FREE SHIPPING Expands 3-4 times while curing

Expands 3-4 times while curing to create an incredibly strong bond

Powered by a built-in rechargeable battery

1" inside diameter inner & outer bearings

menadione sodium bisulfite complex (source of vitamin k activity)

Capacity: 50 gallon

Chamberlain® 8808CB-P Belt Drive Rail Extension Kit for 8' High Garage Doors FREE SHIPPING Expands 3-4 times while curingThis 8 ft. Belt Drive Extension Kit was designed specifically for use with Chamberlain Whisper Drive and Whisper Drive Plus belt drive garage door openers. Featuring the quick install rail system, this is easily installed with all the necessary hardware and replacement belt. Works on garage doors up to 8 feet high Designed specifically for use with Chamberlain Whisper Drive and Whisper Drive Plus belt drive garage door openers Quick install rail