The FLEXIMOUNTS 4ft-by-8ft Overhead Storage Rack is an ideal choice to maximize your storage space. This durable and heavy duty overhead storage system has a capacity of up to 600 lbs. It is made of powder coated steel. The height can be adjusted from 22 to 40 inches providing a convenient and safe place to organize your stuff. This system is simple to set up and all the hardware and instructions needed are included in the package. Fleximounts garage racks come with five different sizes to help you to get the best fit for your garage: 4'x8'; 3'x8'; 4'x6'; 4'x4'; 3'x6'. Features: 1.Integrated grid design for easier assembly; More stable and sturdy compared to others with separate frame and wire.. 2. Easier DIY installation with step-by-step diagrams. Installation Template helps make plan;. 3. Heavy cold-rolled 14 gauge steel construction provides safety loading up to 600lbs. High quality screws provided. All hardware have gone through strict tests. 4. 22'' to 40'' ceiling dropdown provides up to 105 cu. Ft. of storage, compared to other racks with max 33'' ceiling dropdown (max. 88 cu. Ft. of storage) . 5. Everything arrived in one box compared to other racks come with separate boxes. 6. Cold-rolled steel material ensures long-lasting use.7. Our racks can be installed into wood joists and concrete ceilings (Does not fit for metal joist) Specs: 1. Dimensions: 96 in. L x 48 in. W x 22-40 in. H; Universal compatibility with different ceiling joists spacing. 2. Height adjustment: From 22 to 40 inches 3. Weight capacity (each): Up to 600 pounds 4. Material: Powder-coated steel wire 5. Color: White Package Includes: 1 x Garage Rack 4pcs Flat hooks2pcs Utility HooksHardware kit