Crossfire Double Tree-Style CFBDT 160 Burner Size:Natural Gas and you get a cartridge

and you get a cartridge that performs through cleaning after cleaning

Heatilator: PS35

Lucky for you they are easy and simple to replace

The Caldera 76136 filter cartridge is a factory-original replacement for Caldera Vacanza® Series spas

Kozy Heat®

Crossfire Double Tree-Style CFBDT 160 Burner Size:Natural Gas and you get a cartridgeCrossfire Double Tree Style CFBDT 160 Burner Overview Warming Trends patented technology is unique only to our Crossfire Brass Burner System, which allows you the benefit of gas savings and a higher quality experience. No need to use the old fashion fire rings anymore. What's in the Box 1 x Crossfire Double Tree Style CFBDT 160 Burner Specifications For 22" x 17" opening or larger 160K BTU Double Tree Style Brass Burner with WATERSTOP Dimensions 15 1