Heavy Duty Construction Bottom metal bars and side rails help keeping your belongings in place while providing plenty of tie down points Powder Coated Finish Black powder coated finish, Steel wind fairing is included to reducing wind resistance & noise 250LBS Capacity Free up space in your vehicle with a roof rack cargo basket that safely and securely holds up to 250 lbs of cargo, gear and equipment Adjustable Fit Easy assembly and adjustable mounting to most round, square, aero and factory installed crossbars on a variety of cars, trucks, SUVs, vans and other large vehicles using U-bolts Specification Color: Black; Finish: Power Coated; Material: Steel; Weight Capacity: 250LBS; Wind Fairing Dimension: 33.5″ x 7″; Bolt Spacing: 1-7/8” x 4 3/4″; Overall Dimensions w/No Extension: 43″(L) x 39″(W) x 6′(H); Overall Dimension w/ Extension: 64″(L) x 39″(W) x 6′(H). NOTE: In order to avoid the rusting issue,using silicone sealant on the joint and welds in the assembly process is a valid measures. Our Blacksmith Roof Rack is designed to provide instant cargo space. It utilizes your vehicle’s cross bars, easily mounting with four universal U-bolts, accommodating square cross bars up to 3.25″ wide x 1.375″ thick or round bars up to 1.375″ in diameter. Bottom metal bars and side rails help keeping your belongings in place while providing plenty of tie down points Black powder coated finish, steel wind fairing is included to reducing wind resistance noise Free up space in your vehicle with a roof rack cargo basket that safely and securely holds up to 250 lbs of cargo, gear and equipment Specifications Color: Black Finish: Power Coated Material: Steel Weight Capacity: 250LBS Wind Fairing Dimension: 33.5″ x 7″ U-Bolt Spacing: 1-7/8” x 4 3/4″ Overall Dimensions w/No Extension: 43″(L) x 39″(W) x 6′(H) Overall Dimension w/ Extension: 64″(L) x 39″(W) x 6′(H) Important Notice According to our customer feedback using silicone sealant on the joint and welds in the assembly process is a good idea to avoid the rusting issue in the rain. And please feel free to contact us for any question. Shipping All items will be shipped out in 1 business day,no expedited service available. We ship our items to USA only(Does NOT include Hawaii Alaska or Puerto Rico, PO Boxes/APO’s ) Contact us Any Questions,Just feel free to contact us on Amazon.We will reply you in 24 hours.