3M AP802T Whole House Filter Housing – Large Diameter, Model 5639204
Style AP802T Transparent Housing. TRANSPARENT HOUSING - This system has a transparent housing, so you can see the filtration system working and have a visual indication of when it needs replacing. NSF/ANSI STANDARD 42 and CSA B483.1 CERTIFIED - This housing is certified by IAPMO R&T for material satefy and structural integrity to NSF/ANSI standard 42 and CSA B483.1.