L234-11 Gas Insert | 1L234 Gas InsertModel L234-NG11 L234-LP11Fuel Type Natural Gas PropaneMinimum Supply Pressure 5” W.C. (1.25 kPa) 11” W.C. (2.73 kPa)Manifold Pressure - High 3.5” W.C. (0.87 kPa) 10” W.C. (2.49 kPa)Manifold Pressure - Low 1.6” W.C. (0.40 kPa) 6.4” W.C. (1.60 kPa)Orifice Size -Altitude 0-4500 ft. #42 DMS #54 DMSMinimum InputAltitude 0-4500 ft. (0-1372m)16,500 BTU/h(4.84 kW)17,000 BTU/h(4.98 kW)Maximum InputAltitude 0-4500 ft. (0-1372m)23,500 BTU/h(6.89 kW)21,500 BTU/h(6.30 kW)Vent Sizing 3”x3” Co-linear (Standard)2”x3” Co-linear (Optional)3”x3” Co-linear (Standard)2”x3” Co-linear (Optional)CSA P4.1 63.77% 65.02%Minimum Fireplace Opening DimensionsThe minimum fireplace dimensions for the L234 gas fireplace insert areshown in the following diagrams:Approved Venting SystemsFlex Vent Systems: FPI AstroCap™ Flex VentShown with Low Profile Faceplate24-3/4"628mm32-7/8"833mm14-3/4"373mm14-11/16"371mm2-1/2"62mm16-15/16"430mmApproved for sale in Canada only. This appliance has a 7 day timerwhich is required for any appliance sold in Canada.