Aluminum Cube Core Return Air Filter Grille with Plenum Box - 24" x 24" T-Bar Lay-in Drop Ceiling 18in diameter + Product Details Size –

+ Product Details Size – 10" x 20" or 20" x 10" is the size for the duct opening measurement only

Round-neck-to-square-face construction results in 360 degree air diffusion pattern similar to a full round diffuser

[Outer Dimensions: 12

height: 20px

and a touch of elegance in one superior product

Aluminum Cube Core Return Air Filter Grille with Plenum Box - 24" x 24" T-Bar Lay-in Drop Ceiling 18in diameter + Product Details Size –For Lay In T Bar Ceiling High Quality Aluminum Construction SAVE MONEY ON YOUR BILL PRESERVE YOUR HVAC UNIT Highest Rate Of Air Flow Efficiency Easy Unrestricted Air Flow For Your HVAC System 1 2" x 1 2" x 1 2" Cube Core Offers 90% Free Area Concealed Hinges and Latches to achieve a clean and modern look R6 Fiberglass Back Plenum accepts 6" to 18" Round Spin in Collars or Start Collars (not included) Accepts 1" disposable filter (not included)