Air Systems BB60-A Replacement Particulate Filter - 50CFM patio propane heater Different diameters and lengths for

Different diameters and lengths for a wide range of applications

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Air Systems BB60-A Replacement Particulate Filter - 50CFM patio propane heater Different diameters and lengths forAir Systems BB60 A BB60 Replacement "A" Filter 1st Stage OLD PRODUCT NUMBER: BB50 A Air Systems International introduced the first portable breathing air filtration system in 1984 that was used in the closed position the Breather Box. That product, called the BB50 CO, has been the state of the art for breathing air filtration for over 40 years. Today in 2025, we have improved our breathing air portable breathing filtration unit to meet the demands of