The JR Products Deluxe RV Entry Door Window Frame Set is better than the OEM replacement and features additional UV protection molded into the plastic to stop yellowing. Each set includes pre-applied butyl sealant for both the door and the window seals. Installation screws are not included, use #6 flat head x 1-1/2" length. Outside Dimensions: 15-2/3" x 23-3/4". Window Opening: 12" x 21". Glass sold separately. Lifetime Warranty.