18" X 14" Steel Return Air Filter Grille for 1" Filter - Fixed Hinge - [Outer Dimensions: 20 5/8" X 16 5/8"] 18" Diameter + Product Details Size - Compatible With Duct 7in Applications This sheet metal DDAG-A-1212

+ Product Details Size - 22"w X 16"h is the size for the duct opening measurement only

heat pump and centralized air ducted units

} function toggleAccordion(event) { event

+ Product Description Upgrade your HVAC system with our 5" Round Air Vent Supply Grille

actual front end outer dimensions are approximately 26 5/8" width X 10 5/8" height

18" X 14" Steel Return Air Filter Grille for 1" Filter Fixed Hinge [Outer Dimensions: 20 5 8" X 16 5 8"] 18" Diameter + Product Details Size Compatible With Duct 7in Applications This sheet metal DDAG A 1212 + Product Details Size 22"w X 16"h is the size for the duct opening measurement only heat pump and centralized air ducted units