NEW- BOX 1 ONLY-Box 1 (The Canister Assembly): This is the large, heavy, square-shaped box. It contains the pre-assembled aluminum slat curtain rolled up inside the compact 7.25-inch storage canister, the canister lid, drain tubes, and the primary installation hardware kit NOT INCLUDED- BOX 2-Box 2 (The MaxTrak Rails): This is a long, narrow box. It contains the driver and passenger side aluminum bed rails equipped with the integrated T-slot accessory tracks (REPLACEMENT RAILS START AT $319)