Dimensions(L*W*H): 34: (18*36*40" 
42: (19*42*43)" 
38: (16*38*38)"
Framing Dimensions(L*W*H): 34: (18*36*40)" 
42: (22*45*51)" 
38: (18*40*44)"
Fuel Type: Gas
Vent Type: Direct Vent
Vent Size: 5x8
Ignition Type: Electronic
Installation: Zero Clearance
Style: Linear
Vent Inner Diameter: 5"
Vent Outer Diameter: 8"
Weight: 42: 140 lbs
38: 120 lbs
BTU: 42": 32,500 BTU (Heats up to 1,000 sq. ft.) 
34": 18,000 BTU (Heats up to 600 sq. ft.) 
38" :24,0 00 BTU (Heats up to 800 sq. ft.)
Blower: Not Specified