SunStar 4" Combustion Air Termination Cap For SPS/SPU Series Infrared Heaters watt2800 Should this be the case

Should this be the case with your masonry chimney

for example to prevent the formation of cracks

000 BTUs Color Bronze Ignition Type

Simply add AA batteries

Relay Kit 2-Stage ETS GEN 2

SunStar 4" Combustion Air Termination Cap For SPS/SPU Series Infrared Heaters watt2800 Should this be the caseThis 4" cap. is used for combustion air or fresh air duct termination. It can be used with all infrared tube heaters. This product has limited warranty of 1 year. This product is made in USA. Features Heavy gauge aluminum construction Kit Includes: 4" combustion air cap 4" spring tension clamps 2' long 4" flexible air inlet hose For Fresh Air (Combustion Air) duct termination. Specifications Warranty 1 year limited warranty Weight 1. 5 lbs CA