Hayward Universal H-Series LowNox

Elevation 0-10,000 ft. BTU 150,000 BTU Heat Exchanger Cupro Nickel Ignition Electronic Thermostat Dual Special Feature Low NOx Emissions

Elevation 0-10,000 ft. BTU 200,000 BTU Heat Exchanger Cupro Nickel Ignition Electronic Thermostat Dual Special Feature Low NOx Emissions

Elevation 0-10,000 ft. BTU 250,000 BTU Heat Exchanger Cupro Nickel Ignition Electronic Thermostat Dual Special Feature Low NOx Emissions

Elevation 0-10,000 ft. BTU 400,000 BTU Heat Exchanger Cupro Nickel Ignition Electronic Thermostat Dual Special Feature Low NOx Emissions

Elevation 0-10,000 ft. BTU 150,000 BTU Heat Exchanger Cupro Nickel Thermostat Dual Special Feature Low NOx Emissions

Elevation 0-10,000 ft. BTU 200,000 BTU Heat Exchanger Cupro Nickel Thermostat Dual Special Feature Low NOx Emissions

Elevation 0-10,000 ft. BTU 250,000 BTU Heat Exchanger Cupro Nickel Thermostat Dual Special Feature Low NOx Emissions

Elevation 0-10,000 ft. BTU 400,000 BTU Heat Exchanger Cupro Nickel Thermostat Dual Special Feature Low NOx Emissions

Type Positive Pressure Model H150FD Diameter 6 in.

Type Negative Pressure Model H250FD Diameter 6 in.

Type Positive Pressure Model H250FD Diameter 6 in.

Type Negative Pressure Model H400FD Diameter 8 in.

Type Positive Pressure Model H500FD Diameter 6 in.