New Yorker Cast Iron Boiler 85% AFUE 157.5k Input, 135k Gross Out, 117k Net Out, 396 lbs, 1-1/4" NPT Heating Connections, 1/2" NPT Gas Connection, 3" Vent Size, Dims (WxDxH) 21-1/2" W x 26-1/2" D x 37-3/4"H