Raypak AVIA Digital Low NOx Natural Gas Pool and Spa Heater | 264k BTU | Altitude 0-9999 Ft | P-D264A-EN-C | 018092 | 64295 $3,646.00 Raypak AVIA Digital Low NOx Propane Gas Pool and Spa Heater | 264k BTU | Altitude 0-4500 Ft | P-D264A-EP-C | 018098 | 64297 $3,391.00 Raypak AVIA Digital Low NOx Natural Gas Pool and Spa Heater | 399k BTU | Altitude 0-9999 Ft | P-D404A-EN-C | 018093 | 64296 $4,455.00 Raypak AVIA Digital Low NOx Propane Gas Pool and Spa Heater | 399k BTU | Altitude 0-4500 Ft | P-D404A-EP-C | 018099 | 64298 $4,455.00 Raypak Digital Low NOx ASME Certified Natural Gas Commercial Swimming Pool Heater 267k BTU | Cupro Nickel Exchanger | C-R267A-EN-X 010228 $4,897.00 Raypak ProTek Shield Adapter Retrofit Kit | 018006F $220.37