Redesigned, premium Botanicare Black ID Trays offer superior quality and performance. ID trays now include 7-inch-deep sidewalls (measured from top of drainage grid to top of tray) that accommodate larger root masses, taller pots and deeper saturation. Rounded, wider, drainage channels simplify cleaning, and newly engineered corner gussets allow for greater support. These trays maintain Botanicare’s standard true inside dimensions for maximum growing space. The outside measures 53" x 53" x 7” and the inside measures 48" x 48" x 6”. Made from recycled and recyclable ABS plastic.