T-Bar Drop Ceiling Grille - Flat Plate Plaque Difsuer - 24" x 24" - 12" Collar Return Actual Filter Size – 31

Actual Filter Size – 31 3/4"w x 33 3/4" x 1"

Actual Filter Size – 13 3/4"w x 7 3/4" x 1"

both individually adjustable

The total outer size of this grille is the listed size plus 2 and 5/85"

T-Bar Drop Ceiling Grille - Flat Plate Plaque Difsuer - 24" x 24" - 12" Collar Return Actual Filter Size – 31Heavy gauge all steel construction. Powder paint coating White One model suits both T Bar and Drywall installations Ideal for VAV systems. Matching OBD dampers, baffles and plaster frames available. These Supply Diffusers with integral round necks are recommended for heating, ventilating and cooling. Round neck to square face construction results in 360 degree air diffusion pattern similar to a full round diffuser. High diffusion induction rates