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Filter Size - 33
+ Product Details Size - The listed 6" diameter refers specifically to the size of the duct opening
Actual Filter Size – 13 3/4"w x 29 3/4" x 1"
Design – Removable face for cleaning and access to damper - wooden damper for airflow shutoff control
The snap-lock/push-open technology allows easy access and installation on DryWall
18" Insulated Aluminum Flexible HVAC Duct R-6.0 – 25' Length w20h20 Filter Size - 33+ 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
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