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Our metal and paper diagonal support bars ensure the filter can hold an extra heavy load of dirt
+ Product Details Size - 12"w X 28"h X 2"d (for duct opening measurement only)
angle them down for effective warmth distribution
Suitable for all AC applications
Straight Register Boot - 10" X 4" X 4" Round Round Duct Pipe Our metal and paper diagonal+ Product Details Size & Compatibility The size of galvanized sheet metal straight floor boot is 10" X 4" X 4". It is compatible with 4" 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