DAYTON 7AR88 Infrared,Tube Heater,NG,200K Infrared Gas Tube Heater, Indoor/Outdoor, Gas Type NG, 200,000 BtuH, Length 724 In., Width 18-1/8 In., Height 8-1/2 In., Radiant Pipe 60 ft., Voltage 120, 60 Hz, 4.8 Amps AC, Min. Mounting Height 18 ft., Clearance to Combustibles (In.) Behind 1-45 Deg. 8, Clearance to Combustibles (In.) Below 0 Deg. 94, Clearance to Combustibles (In.) Front 1-45 Deg. 63, Clearance to Combustibles (In.) Sides 0 Deg. 41, Clearance to Combustibles (In.) Top 0 Deg. 6, Clearance to Combustibles (In.) Top 1-45 Deg. 10