Specifications Model: OW258 Diameter: 10.15 inch / 258 mm Tube Thickness (in extended state): 0.98 inch / 25 mm Length: 300 inch / 7620 mm Thermal Resistance Value: R-6.0 Net Weight (Including all Accessories): 15.32 lbs / 6.95 kg Product Dimensions (in extended state): 12.51 x 12.51 x 300 inch / 318 x 318 x 7620 mm Package Content Flexible Duct x 1 Stainless Steel Clamps x 2