![Suреr Brаndѕ 30" X 20" [Duct Opening Measurements] Heavy Duty Steel Return Air Grille Outer Dimensions: 31.75"W X 21.75"H for 30x20 Duct Opening](https://lh3.googleusercontent.com/blogger_img_proxy/AEn0k_sz3cOnnJS8QDFkhKiTcje0leYc-6drg5r64EDgj_hh5nTRV7Nw3QwZTInhhckqTQBhxkbjoCG3ecLZETvBgPEGAbd4Ym3KhtZzpZ01aVOd7Q2MPRWuWKH6EbXZUTuhqV_onQ=w600-h300-p-k-no-nu)
Suреr Brаndѕ 30" X 20" [Duct Opening Measurements] Heavy Duty Steel Return Air Grille Outer Dimensions: 31.75"W X 21.75"H for 30x20 Duct Opening
Affiliate reviews 30 X 20 [Duct Opening Measurements] Heavy Duty Steel Return Air Grille | HVAC Vent Cover Grill for Sidewall and Ceiling, White | Ou…