US Boiler Co Cast Iron Boiler 84% AFUE 140k Input, 117k Gross Out, 102k Net Out, 284 lbs, 1-1/4" NPT Heating Connections, 1/2" NPT Gas Connection, 6" Vent Size, Dims (WxDxH) 19" W x 32" D x 40"H, LP Boiler