Giant Stack Trays, Fits 42 x 32" Sheets, Plastic, 40 Lb Capacity, White, 2/Box SAF4899 Create durable and efficient flat filing at a fraction of the cost of other products with this versatile stacking system. Trays can be stacked up to 5 feet high and have a hefty 40 lb. per-tray load capacity. Constructed of a high-density high-molecular weight polyethylene for rigid support and strength. Available in two sizes to easily accommodate most print, artwork or other flat documents. SOLD BY THE CT