Brand New in the Box! CHAMBERLAIN 3 in. W x 10 ft. L Steel Belt Rail Extension Kit FEATURES: The Chamberlain G8810CB-P Rail Extension Kit is designed to extend the reach of Chamberlain belt drive garage door openers, making them compatible with doors up to 10 ft. high. Built from durable steel and engineered for smooth, quiet, and reliable performance, this kit is the perfect upgrade for taller garage doors. ? Key Features Extends Chamberlain belt drive openers for garage doors up to 10 ft. tall 3 in. W x 10 ft. L steel rail extension kit Heavy-duty steel construction ensures strength and long-term durability Maintains quiet, smooth belt drive operation Official Chamberlain part ? perfect fit and reliable performance ?? Technical Specifications Model: G8810CB-P Product Type: Belt Drive Rail Extension Kit Dimensions: 3 in. (W) x 10 ft. (L) Material: Black powder-coated steel Door Compatibility: Garage doors up to 10 ft. high Opener Compatibility: Chamberlain belt drive openers ? What's in the Box 1 x 3 in. W x 10 ft. L Rail Extension Belt drive extension components Mounting hardware User installation guide ? Perfect For Homes with 10 ft. high garage doors Upgrading Chamberlain belt drive openers for taller doors DIY installers seeking quiet and reliable garage door operation Choose the Chamberlain G8810CB-P Rail Extension Kit for superior durability, a precise fit, and quiet performance on 10 ft. garage doors. GREAT ITEM AT A GREAT PRICE!!