HVAC premium Stick-on Collar Duct | Galvanized Steel Metal Collar Duct 30-Gauge | 24" is Compatible with 24" Floor Grille Toe Space + Product Details Size - Compatible With Duct 7in Applications This sheet metal DDAG-A-1212

+ Product Details Size - 18"w X 12"h is the size for the duct opening measurement only

actual front end outer dimensions are approximately 24 5/8" width X 27 5/8" height

Effortless Integration: Crafted for easy connection to supply grilles of drop ceiling T-Bar vent covers

border-bottom: 2px solid #5296dd

Outer Dimensions Are 17

HVAC premium Stick on Collar Duct Galvanized Steel Metal Collar Duct 30 Gauge 24" is Compatible with 24" Floor Grille Toe Space + Product Details Size Compatible With Duct 7in Applications This sheet metal DDAG A 1212 + Product Details Size 18"w X 12"h is the size for the duct opening measurement only actual front end outer dimensions are approximately 24 5 8" width X 27 5 8" height