7" Insulated Aluminum Flexible HVAC Duct R-6.0 – 25' Length Compatible With Duct 8in 12" x 4" Floor Register

12" x 4" Floor Register HVAC Air Supply Grille - Heavy Duty Rigid Built - Plastic Never Rust Vent Duct Cover

High Quality – Solid stamped steel with counter-sunk screw holes (screws included) and no sharp edges

+ Product Details Size - 20"w X 36"h is the size for the duct opening measurement only

75"H – fits a 18" X 4" duct opening

+ Product Details Size – 28"w X 30"h is the size for the duct opening measurement only

7" Insulated Aluminum Flexible HVAC Duct R-6.0 – 25' Length Compatible With Duct 8in 12" x 4" Floor Register+ Product Details High Quality Aluminum housing on the outside and on the inside for the best insulation value Insulation A thick blanket of fiberglass insulation provides you with an R Value of 6. 0 Energy Efficient Air tight inner core decreases the pressure loss and provides a more hygienic environment high energy efficient No fiberglass erosion into air stream Design Designed to withstand bends and sharp turns without kinking. Tough reinforced