Pentair 172855 0,25-Inch Stainless Steel Air Vent Strainer Replacement Pool and Spa D.E. Filter encapsulated-suits NIOSH approved for at least

NIOSH approved for at least 95 percent filtration efficiency against certain non-oil based particles

3M recommended for nuisance level organic vapor relief and for ozone protection up to 10X OSHA PEL

OPEN TOP AND BOTTOM CAPS: Open molded top and bottom end cap gaskets measure 8

Comfortable

2 lb Renew Granular Non-Chlorine Shock

Pentair 172855 0,25-Inch Stainless Steel Air Vent Strainer Replacement Pool and Spa D.E. Filter encapsulated-suits NIOSH approved for at leastPentair 172855 0,25 Inch Stainless Steel Air Vent Strainer Replacement Pool and Spa D. E. Filter Air vent strainer replacement Fits Pentair Nautilus Plus pool and spa D. E. filters Also fits Pentair FNS pool and spa D. E. filters Made of stainless steel Measures 0. 25 inch