SunStar SPU Series Standard/Tough Guy Infrared Straight U Tube Two Stage Heater - 40,000 BTU Tube Length:20 Feet The valve box contains gas

The valve box contains gas valve and pilot assembly and the switch box contains an electronic module and battery back

often assisted by a blower

use a transformer sized at 40 VA for the first heater and 20 VA per each additional heater

For use with 5/8" chimneys

Model 91 wood-burning stove

SunStar SPU Series Standard/Tough Guy Infrared Straight U Tube Two Stage Heater - 40,000 BTU Tube Length:20 Feet The valve box contains gasWhether you need to heat your warehouse, garage, or other hard to heat spaces, the SunStar SPS U Series infrared heaters provide both the field efficiency of radiant heat and the installation flexibility you need. The SPU Series are perfect heaters for hard to heat spaces like your warehouse or garage, the SunStar 40,000 BTU SPU Series Infrared Tube Heater with a 20' long tube provides both the fuel efficiency of radiant heat and the installation