American Gas Lamp Works Vienna 1000W 20" Charcoal Gray Residential Wall Mount Aluminum Natural Gas Lamp With Dual Open Flame Burner Light Assembly, Flat Tempered Glass Panes and Urn Finial stone river glass with cast iron frame Glass standard glass with cast iron frame Glass type Ceramic glass Firebox – dimension (Height X Width X Depth) 16 3 8” X 18 1 2” X 22 3 4” Steel thickness – body 3 16” Steel thickness – top 1 4” Centre line of flue outlet to the side 14 1 2” Centre line of flue outlet to the floor 37 1 8” Clearance – front (Canada USA) 48” 36” Clearance – back wall 24" Clearance – side wall 6" Clearance – opposite side wall 24” Clearances – ducts <6’=6” Eco savvy consumers will appreciate its efficient combustion they are not compatible with liquid propane like a light bulb