Stratus WHITE Plastic Filtered Air Return

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Stratus WHITE Plastic Filtered Air Return Stratus WHITE Plastic Filtered Air 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 INCLUDED American Louver Item #'s: STR-ERFG-6W, STR-ERFG-8W, STR-ERFG-10W, STR-ERFG-12W, STR-ERFG-14W. Collar/Neck depth = 2.46", plenty of space to attach the air duct. 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. Product Video Spec Sheets & Data Submittal Sheet-4989 Flyer 4989 Flyer2 4989 Install Directions Show more