Phoenix Pre‑Filter for Phoenix Guardian R Air Scrubber Duct Cleaning 600 PSI Maximum flow 7

600 PSI Maximum flow 7 GPM Inlet and outlet 1/4 inch male x 1/4 inch female Repair kits NA031A (older) or NA033A (newer) Maximum temperature Not stated by the manufacturer Manufacturer Not settled — see note above Frequently Asked Questions

It also swings further across the pressure range than any other tip in the set

This premium REPLACEMENT HEPA filter is engineered for the Phoenix Guardian R Pro HEPA Air Scrubber System

Adapts 2 inch vacuum hose to a 1

Phoenix Pre‑Filter for Phoenix Guardian R Air Scrubber Duct Cleaning 600 PSI Maximum flow 7Overview First stage pleated pre filter, 1" 18" 18". Phoenix part number 4031877. It is the first filter the air meets in a Guardian R air scrubber, and its job is to protect the HEPA filter behind it. What it fits Phoenix Guardian R air scrubber named as item 1 in the Guardian R Pro 50 Hz service parts list, Air Filter, Pleated, 1" 18" 18" The filter stack, and why the order matters The Guardian R runs a staged filter arrangement: Stage 1 pre filter