The PBH-420-1 is a 1" #20 Big Blue Bag Filter Housing from Pentair, designed for high-capacity filtration in residential systems. This robust housing accommodates standard #20 filter bags, providing excellent dirt-holding capacity and extended service life. Constructed from durable materials, it ensures resistance to corrosion and wear, making it suitable for various water conditions. The 1" inlet and outlet connections allow for easy integration into existing plumbing systems. Ideal for whole-house filtration, the PBH-420-1 enhances water quality by effectively removing sediments and impurities.