As part of the growing Opel family, the Keystone is the result of fine craftsmanship, inspired by versatility and built on more than 30 years’ of proven performance with high efficiency wood–burning fireplaces.
The Keystone name comes from the interchangeable keystone facing that is offered either as a semi-clean look or as a full faceplate, adding modern sophistication and design choices to any mid-sized space.
36 7/8″ W X 52 1/4″ H X 24″ D
605 lb
325 in2
22 ½” W x 13 ⅝” H + arch
The observable firebox volume is 3.6 cubic feet
EPA official usable firebox volume per certification testing is 2.3 cubic feet.
EPA tested with 15.75″ logs; can accept up to 18″ logs
7″ Excel
Black
4″
All RSF models come equipped to accept a 4″ outside air duct, a 5″ can also be used. All models can also be installed to operate using room air.
NO
27,034 BTU/h
Based on EPA certification testing using crib wood and calculations from CSA B415.1-10.
70,000 BTU/h
Based on engineering calculations using firebox volume, efficiency, loading density (12lb/cu ft for hardwood), average humidity, reloading interval, type of installation, etc.
1,500 to 3,000 ft2
Depends primarily on wood quality, ambient air temperature and building heat loss.
0.7 g/hr
80%
Low Heating Value (LHV) CSA B415.1-10 calculations.
70%
High Heating Value (HHV) CSA B415.1-10 calculations.
0.58 g/min
Carbon Monoxide (CO), using data from EPA crib wood testing