Fill any Gaylord box (48" x 48" x 36") with used water filters and send to us for Eco friendly green recycling. Ship your Gaylord box on a pallet to us using your favorite trucking line. You must place our required one time use shipping label on the Gaylord box. Each box requires a new one time use label. Shipments without a current unused label will be returned to sender at sender's expense.