As a veteran-preferred air flow proving switch

What type of tubing should be used for the air sampling lines

Safety Compliance: Maintains the combustion air proving sequence required for safe unit heater operation

Warning: This product may expose you to chemicals known to cause cancer and reproductive harm

Does this kit include both internal and external seals

Superior F35A / Alco A3F Suction Line Filter Core Els PW 17895 As a veteran-preferred air flowFor veteran technicians and commercial contractors, the Superior F35A Alco A3F Suction Line Filter Core is a critical component for system clean up and protection. This core is engineered for refrigeration system contaminant removal, featuring a super pleated filter media that provides approximately 115 square inches of surface area. This high suction line filtration area ensures a low pressure drop while trapping solid contaminants down to 10