Fits these systems

Systems this part fits, with compatibility status and evidence
System	Compatibility status	Evidence
Miller Face Shield PAPR	T2 Manufacturer-listed part	[01] www.millerwelds.com manufacturer manual Item 2 of Figure 10-2 "Faceshield PAPR Blower Assembly" parts table, Section 10, p.31 of Miller OM-288359A (2021-07): "287170-2 — Filter, Particulate (HEPA) 2 Pack, Qty 1"; "287170-6 — Filter, Particulate (HEPA) 6 Pack, Qty 1"; "287170-36 — Filter, Particulate (HEPA) 36 Pack, Qty 1". Filter/spark-guard/prefilter install sequence shown in Section 6-4, p.16. Archived at sources/miller-o288359a_mil.pdf. 2026-07-06

Specifications

Technical specifications
Pack sizes (SKU suffix)	287170-2 (2-pack); 287170-6 (6-pack); 287170-36 (36-pack)
Filtration	Particulate (HEPA), part of the NIOSH-approved PAPR; approved to filter particulate down to 0.3 micrometers in size
Install stack	Fitted with Spark Guard (235676) and Foam Prefilter (235674) under the Filter Cover (287175); see Section 6-4
Handling	Do not wash filters, clean with compressed air, or reuse dirty air filters (Section 1-2 hazard notice)

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Listing ≠ endorsement. Confirm availability, approval status and source evidence before purchase or regulated workplace use.

Notes

Filter Lifetime is tracked on the blower's on-board hour meter (max 500 h shown as "MAX 500H" on the Information > Filter Lifetime screen, Section 6-7, p.19) — a separate figure from the battery's 500-charge-cycle life spec (Section 6-1, p.14). Do not conflate the two "500"s.

Record sources

Evidence — dated sources

[01] www.millerwelds.com manufacturer manual OM-288359A Section 6-4 (p.16) and Section 10 (p.31). 2026-07-06