Modest, yet refined, the new DRT3000 Series direct-vent gas fireplaces combine beauty, efficiency and value. These fireplaces offer a clean-face heat circulating design combined with a beautiful energy saving flame, glowing embers, and oak logs for a realistic touch. To suit the mood of the occasion, you have complete comfort and flame control with high and low settings that are operated from the flip of a wall switch. New controls offer energy saving pilotless ignition with standard seamless battery backup, so you can count on your fireplace to provide heat even during a power outage. DRT3000 Series gas fireplaces are also a leader in heating efficiency and cost less to operate. With optional accessories like remote control and stylish interior liners, you can customize the DRT3000 fireplace to enhance any room. Aesthetics Select from four sizes - 33", 35", 40" and 45" - to accommodate the size of your room and heating needs. Oak logs and glowing embers deliver an elegant fire presentation. A newly designed pan burner produces brilliant flames for a vibrant presentation and hours of enjoyment. High/Low flame operation allows you to adjust the flame intensity and heat. Clean, radiant design blend with any style of mantel or trim. Comfort Heat-circulating design increases warm air distribution for exceptional supplemental heat. Optional blower helps circulate warm air into a large room for maximum comfort. High/low flame control allows you to control the ambiance in the room for maximum comfort and enjoyment. Uses 4.5" x 7.5" Venting Pipe Framing Dimensions: 33" - 33.75W x 34.25"H x 14.5"D (14,000 BTUs) 35" - 35.5W x 36.25"H x 18"D (16,000 BTUs) 40" - 40.5W x 41.25"H x 18"D (20,000 BTUs) 45" - 45.5"W x 41.25"H x 18"D (21,500 BTUs)