The full sized Mission 6" B-Vent Fireplaces feature an impressive, multidimensional refractory log arrangement with deep glowing ember bed, An aluminized dual flame tube burner provides random, dancing yellow flames and real wood-fire ambiance, The Mission ships smooth faced and include hidden screen pockets and EZ access flue damper with safety shut-off switch, Larger, Full Sized Firebox, Deluxe Sized Refractory Logs With Beautiful Glowing Ember Coal Bed, Wood Fire Ambiance Captured With innovative Millivolt U Tube Dual Burner, All Fireplaces Come NA Gas, LP Conversion Kit Available, EZ Access Flue Damper Control With Auto Shut off Switch, Premium Herringbone Textured Terracotta Refractory Brick Liner, Uses 6" B-Vent Pipe, Warranty: 2 Years With Labor Allowance, BTUs: 40,000, Finish: Warm Red Herringbone Refractory Brick Liner, Framing Dimensions: 41-1/4" W x 40-3/4" H x 21-7/8" D, SKU: TWST7246