34"w X 24"h Aluminum Exterior Gable Louver Vent for Walls & Crawlspace - Weather-Resistant Air Grille with Screen Mesh - [Outer Dimensions 35.75"w x 25.75"h] Aluminum - Cube Core Drop Ceiling HVAC Supply Grille 4 X 12 Is CRFG2028 Width_14in

Drop Ceiling HVAC Supply Grille - For T-Bar Lay-In - 3 Coned - 24" x 24" - For 8" Vent Connection - Black

+ Product Details Size - 22"w X 24"h is the size for the duct opening measurement only

actual front end outer dimensions are approximately 18 5/8" width X 38 5/8" height

+ Product Details Size - 6"w X 28"h X 2"d (for duct opening measurement only)

actual front end outer dimensions are approximately 30 5/8" width X 18 5/8" height

34"w X 24"h Aluminum Exterior Gable Louver Vent for Walls & Crawlspace Weather Resistant Air Grille with Screen Mesh [Outer Dimensions 35.75"w x 25.75"h] Aluminum Cube Core Drop Ceiling HVAC Supply Grille 4 X 12 Is CRFG2028 Width_14in Drop Ceiling HVAC Supply Grille For T Bar Lay In 3 Coned 24" x 24" For 8" Vent Connection Black + Product Details Size 22"w X 24"h is the size for the duct opening measurement only