Stratus ERFG WHITE Plastic Filtered Air ReturnSKU#: 4989W-EC-06
White 2'x2' Plastic Egg Crate Filtered Return. Fits in a standard ceiling grid system. Actual outside dimensions: 23-3/4" x 23-3/4" x 6.9" high. 20" x 20" filters, NOT INCLUDEDCLICK TO WATCH THE INSTRUCTIONAL VIDEO ON YOUTUBE
STOP! Please make sure your collar/neck size is correct for all pieces in your order. Please remember, just because the collar size for one diffuser is an 8" diameter, it doesn't mean all diffusers in your building have the same collar diameter.