JR Products 11021 Black RV Deluxe Entry Door Window Frame Better than OEM replacement Additional UV protection molded into the plastic to stop yellowing Includes pre-applied butyl sealant for both door and window seals Outside Dimensions: 15-2/3" x 23-3/4"; Window opening: 12" x 21" Installation screws not included; use #6 flat head x 1-1/2" length