Straight Register Boot - 12" X 4" X 7" Round 7" Diameter If you still have the

If you still have the fiberglass low quality filter that is below MERV 4

Slim Sliding Metal Damper To Control and Adjust Airflow

+ Product Details Size – 14"w X 12"h is the size for the duct opening measurement only

+ Product Details Size - 10"w X 18"h X 2"d (for duct opening measurement only)

Straight Register Boot - 12" X 4" X 7" Round 7" Diameter If you still have the+ Product Details Size & Compatibility The size of galvanized sheet metal straight floor boot is 12" X 4" X 7". It is compatible with 7" duct Superior Quality Made in the USA. Our straight register boot is made of high quality galvanized steel metal for durability and rust prevention. Applications The straight boot is used for the transition from round pipe or insulated flex duct to register or grille + Product Description If you are looking for a