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![Photo 1 of 16"W x 26"H [Duct Opening Measurements] Steel Return Air Grille (HD Series) Vent Cover Grill for Sidewall and Ceiling, White | Outer Dimensions: 17.75"W X 27.75"H for 16x26 Duct Opening](https://firebasestorage.googleapis.com/v0/b/nellishr-cbba0.appspot.com/o/processing-photos%2F1012293372%2FxtOWncpt3XmNLeKUhYUJW.jpg?alt=media&token=9bcf86c1-0754-4d29-b816-6b45c7d6a080)
![Photo 1 of 16"W x 26"H [Duct Opening Measurements] Steel Return Air Grille (HD Series) Vent Cover Grill for Sidewall and Ceiling, White | Outer Dimensions: 17.75"W X 27.75"H for 16x26 Duct Opening](https://firebasestorage.googleapis.com/v0/b/nellishr-cbba0.appspot.com/o/processing-photos%2F1012293372%2FwANTh0_4Kx3lXI441ohlY.jpg?alt=media&token=855e2db0-1a38-4c0d-aa2c-3be4c6502391)