Chamberlain® 8808-CB Belt Drive Rail Extension Kit for High Garage Door, 8' 4thJuly Constructed from 12-1/2 Gauge galvanized

Constructed from 12-1/2 Gauge galvanized steel for durability

Contains UV blockers to reduce the sun's graying and fading effects

Ideal combination of easy driving

and make high reach cleaning fast and easy

Design factor: 4 to 1

Chamberlain® 8808-CB Belt Drive Rail Extension Kit for High Garage Door, 8' 4thJuly Constructed from 12-1/2 Gauge galvanizedFor belt drive garage door openers. Includes rail extension, replacement belt, and all necessary hardware. 8' New structural steel rail extension kit For belt drive garage door openers Includes rail extension, replacement belt, and all necessary hardware Works with item #WD822KD.