Replacement 12″ x 21″ Round Corner Obscure Safety Glass Window for Dexter 5050 Series RV Doors. Standard with damage resistant pebble finish fiberglass, exterior and interior. Features a black exterior and black interior.Replacement round corner obscure safety glass window 12″ x 21″For Dexter 5050 Series RV DoorsDamage resistant pebble finish fiberglass, exterior and interiorFeatures a black exterior and white interior Window Dimensions: 12″ x 21″