Aluminum Cube Core Return Air Filter Grille with Plenum Box - 24" x 24" T-Bar Lay-in Drop Ceiling w24h24 Crafted from strong and sturdy

Crafted from strong and sturdy steel with a powder-coat finish

A Uniquie Combination of Cotton & Synthetic Fibers Gives You The Most Filtration And The Least Air Resistance - Equals Great Air & Easy Airflow For Your System

+ Product Details Perfect Fit & Easy Sizing - Designed for a 6" x 14" or 14" x 6" duct opening (measured at the opening)

actual front end outer dimensions are 7" width X 7" height

+ Product Details 18"w X 18"h is the size for the drywall opening measurement only

Aluminum Cube Core Return Air Filter Grille with Plenum Box - 24" x 24" T-Bar Lay-in Drop Ceiling w24h24 Crafted from strong and sturdyFor 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)