EcoSmart Fire Flex 104SS 112" Black Single Sided Ethanol Fireplace Insert with Stainless Steel Burner and Left Side Decorative Box by Mad Design Group d29.83 Model KSS4812DS Product Size 48" Refractory Type:Back Refractory (2 Required) Model KSS4812DS Product Size 48" Fuel Type Natural Gas or Propane Vent Type Vented Weight 304 lbs Number of Logs in Set 12 Fireplace Dimension Depth 21" x Fornt Width 54" x Back Width 54" the Symmetry can be installed fully recessed into your wall or semi flush mounted within a 2x4 wall (requires SYM XS surround) Available in black The design is fitted with a glass panel that divides the box and the Firebox and creates an attractive streamlined look