Specifications Model: OW108 Diameter: 4.25 inch / 108 mm Tube Thickness (in extended state): 0.98 inches / 25 mm Length: 300 inches / 7620 mm Thermal Resistance Value: R-6.0 Net Weight (Including all Accessories): 8.04lbs / 3.65 kg Product Dimensions (in extended state): 6.49 x 6.49 x 300 inch / 165 x 165 x 7620 mm Package Content Flexible Duct x 1 Stainless Steel Clamps x 2