Maximum heat output: 75,000 BTUs
Heat capacity: 1,500 square feet
Size of firebox: 2.8 cubic feet
Weight: 230 lbs
Tested and approved: EPA, UL 127-1999,
ULC-S610-M87 R-94
Emmission rate: 5 g/hour
Burning rate: 0.83 kg/hour
Log size: 21 inches (maximum)

Patent No: US 7,325,541 B2

 

The OPUS can be installed with the following chimneys: