Black T-Bar Drop Ceiling Grille - Flat Plate Plaque Diffuser - 24" x 24" - 14" Collar Outdoor Vent Covers actual front end outer dimensions

actual front end outer dimensions are approximately 34 5/8" width X 34 5/8" height

+ Product Details Perfect Fit & Easy Sizing - Designed for a 8" x 18" or 18" x 8" duct opening (measured at the opening)

Design – This galvanized or stainless-steel boot is designed for use with return and interior wall supply air ducts

+ Product Details Size - 28"w X 22"h is the size for the duct opening measurement only

Applications – The galvanized steel rounds take-off duct is used to cut into a plenum or rectangular duct to begin a trunk line or branch-like runs

Black T-Bar Drop Ceiling Grille - Flat Plate Plaque Diffuser - 24" x 24" - 14" Collar Outdoor Vent Covers actual front end outer dimensions+ Product Details Size 24"w X 24"h. These are specially sized to fit into all drop ceilings, also called T Bar systems. Can be hooked up with our "Butterfly Dampers" for precise airflow control. For 14" duct opening High Quality Heavy gauge all steel construction. Installation Location Ceiling. Design These Supply Diffusers with integral round necks are recommended for heating, ventilating and cooling. Round neck to square face construction results in