Vintage Technologies WD07 RV Teardrop Tear Drop Trailer Windows (1) 21" x 14" Configuration: Horizontal half vent with a screen and window lock, Includes stainless steel mounting screws Cut Out 21-3/4 x 14-1/4 Outside Measurement 22-3/4 wide x 15-1/4 tall Corner Radius 3-5/16 Wall Thickness: Sold with  trim ring for a  wall. Other thicknesses are available up to 2-3/16for a 12.50additional charge by calling our store