OP Products Exterior Window Frame - Replace your RV's door window frames with exact factory authorized replacement parts. Quick and easy installation; no special tools required. Note: Glass window is held in position by frames only. Beware of sharp edges on glass during replacement process. Glass and replacement screws sold separately. Overall frame Dimensions: 15.75 inch x 24.75 inch Glass Dimensions: 12 inch Width x 21 inch height. Exterior Window Frame: Nu Tru White.