18"w X 8"h Aluminum Adjustable Return/Supply HVAC Air Grille Grilles The design eliminates noise and Compatible With Duct 7in Applications This sheet metal DDAG-A-1212
Yard notes & kiln story
Description
The design eliminates noise and prevents louvers from vibrating
+ Product Details Size – 30"w X 10"h is the size for the duct opening measurement only
See chart below:
+ Product Details Size - 20"w X 20"h is the size for the duct opening measurement only
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18"w X 8"h Aluminum Adjustable Return Supply HVAC Air Grille Grilles The design eliminates noise and Compatible With Duct 7in Applications This sheet metal DDAG A 1212 The design eliminates noise and prevents louvers from vibrating + Product Details Size – 30"w X 10"h is the size for the duct opening measurement only