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![Photo 1 of [Duct Opening Measurements] Steel Return Air Grille | Vent Cover Grill for Sidewall and Ceiling, White | Duct Opening Duct Opening](https://m.media-amazon.com/images/I/81m0BjVI41L.jpg)
![Photo 2 of [Duct Opening Measurements] Steel Return Air Grille | Vent Cover Grill for Sidewall and Ceiling, White | Duct Opening Duct Opening](https://firebasestorage.googleapis.com/v0/b/nellishr-cbba0.appspot.com/o/processing-photos%2F1027655248%2FJNa-GxKipln4Qc5ZOxtVX.jpeg?alt=media&token=9046bab9-9860-4149-b4d1-988d14467302)
![Photo 3 of [Duct Opening Measurements] Steel Return Air Grille | Vent Cover Grill for Sidewall and Ceiling, White | Duct Opening Duct Opening](https://firebasestorage.googleapis.com/v0/b/nellishr-cbba0.appspot.com/o/processing-photos%2F1027655248%2F9cPXe86Tk3M3eakKw20zR.jpeg?alt=media&token=7939d66a-cb98-43f0-90f3-1e90312e0c69)