The Greystone Electric RV Fireplace with Crystals - 26" Wide - Recessed Mount - Black # 324-000068 is the closest to your 26" W x 21-3/4" T x 6-1/2" D cutout with its cutout dimensions of 26-1/4" wide x 20-1/2" tall x 5-3/8" deep. The LED flame lighting has 3 color schemes to choose from and the LED control buttons on the front provide easy access to the timer, temperature, color, and on/off. It also comes with a remote control with batteries lets you operate the fireplace from across the room. view full answer...