fleximounts 4x6 heavy duty overhead garage adjustable ceiling storage rack, 72" length x 48" width x 40" height (black) fleximounts the fleximounts 3ft-by-6ft 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 450 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 separete 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 450lbs. high quality screws provided. all hardwares have gone through strict tests.. 4. everything arrived in one box compared to other racks come with separate boxes.. 5. cold-rolled steel material ensures long-lasting use. 6. fleximounts offers you more installation solutions to perfectly fit for your space: 4'x8, 3'x8', 4'x6', 4'x4', 3'x6' size options. 7. our racks can be installed into wood joists and concrete ceilings specs: 1. dimensions: 72 in. l x 36 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: up to 450 pounds 4. material: powder-coated steel wire 5. color: black package includes: 2 x garage rack hardware kit accessory hooks and items pictured on the racks are not included