Housing with Fasteners, Material Steel, Color Silver, Galvanized Finish, Length (In.) 6-7/16, Height (In.) 3-1/8, Width (In.) 5/16, Depth (In.) 6-7/16, Roller Width/Dia. (In.) No Roller, Mounting Surface, Mounting Hole Size (In.) 9/32 In., Number of Wheels 0, Construction Galvanized Steel, Hardware Included, For Use With Sectional Garage Door, Package Quantity 1