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![Photo 1 of 18"W x 18"H [Duct Opening Size] Steel Return Air Grille (AGC Series) Vent Cover Grill for Sidewall and Ceiling, White | Outer Dimensions: 19.75"W X 19.75"H for 18x18 Duct Opening](https://firebasestorage.googleapis.com/v0/b/nellishr-cbba0.appspot.com/o/processing-photos%2F1019827716%2FImUKXepdN2X2EgL9rWct6.jpg?alt=media&token=46d63a34-5dcc-4173-a58e-7bd80491e4f0)
![Photo 1 of 18"W x 18"H [Duct Opening Size] Steel Return Air Grille (AGC Series) Vent Cover Grill for Sidewall and Ceiling, White | Outer Dimensions: 19.75"W X 19.75"H for 18x18 Duct Opening](https://firebasestorage.googleapis.com/v0/b/nellishr-cbba0.appspot.com/o/processing-photos%2F1019827716%2F43Q4eIoYIgkFEU4d7kHLz.jpg?alt=media&token=1301bf90-fbd0-4840-90f9-50d7eb76242c)