16" X 10" 3-Way Air Supply Grille – Steel HVAC Vent Cover with Damper, Wall/Ceiling Register, White Curved Blade Steel Ideal for Walls & Ceilings:

Ideal for Walls & Ceilings: Designed for seamless installation in standard 16" X 16" duct openings

and lay it flat in the grid

actual front end outer dimensions are approximately 24 5/8" width X 14 5/8" height

Design – These are specially sized to fit into all drop ceilings

16" X 10" 3-Way Air Supply Grille – Steel HVAC Vent Cover with Damper, Wall/Ceiling Register, White Curved Blade Steel Ideal for Walls & Ceilings:+ Product Details Outer dimensions: 17. 75"W x 11. 75"H fits a 16" X 10" duct opening Durable stamped steel construction ensures long lasting performance Designed for sidewall and ceiling installation with included screws Multi shutter damper with easy lever for precise airflow control Smooth powder coated white finish for a sleek look and scratch resistance + Product Description Maximize your homes airflow with this premium Air Supply Grille air