Slide-A-Shelf Standard Slide-out Shelf with Full Extension Rails, 28" Width x 21-1/2" Depth, Ready-to-finish Maple Fronts Durable easy-to-clean shelf base and tapered, wrap-around 7 ply Baltic birch sides, with a tough UV cured poly-urethane finish 3/8 inch thick and 4 inch high Birch sides and backs; with 2 inch front pulls Full extension heavy duty steel ball bearing rails rated at 100 lbs. including weight of shelf Manufactured in the USA Easy to assemble and install with just a screwdriver; all hardware is included