Double stack IBC tanks and save valuable floor space! 16,000 lb. weight capacity accommodates up to two full IBCs. 100% polyethylene construction has no metal parts - rust and corrosion are things of the past. 400-gallon sump capacity meets SPCC and EPA Container Storage Regulation, 40 CFR 264.175. Inner polyethylene supports feature a dense pattern of vertical ribs which provide superior strength. Rated at 16,000 lbs. UDL capacity, the Ultra-IBC Spill Pallet will provide years of service under rigorous conditions.