KleenGuard 3300 Series N95 Particulate Respirator (RA3315)

The KleenGuard 3300 Series RA3315 is a molded cup-style N95 particulate respirator for general industry and construction — NIOSH-approved under 42 CFR Part 84, rated to filter at least 95% of airborne particles at 0.3 microns or larger. Available in a 20-respirator box at $22.19 ($1.11 per unit), the RA3315 is the non-valved configuration in KleenGuard's 3300 series, suited for environments where exhalation valves are restricted or where inward-leakage from exhalation through an unfiltered path is a regulatory consideration. For the complete selection of disposable N95 respirators, see the disposable respirators collection.

Construction and Design

The RA3315 uses a rigid molded cup shell — the defining construction of cup-style N95 respirators versus flat-fold designs. The molded cup maintains its shape regardless of humidity, temperature, or breathing pressure, holding the filter media away from the face and reducing contact between the mouth and the inner filter surface during prolonged wear. A two-strap headband distributes retention force across the crown and nape of the head, accommodating a wider range of head geometries than single-strap designs. An adjustable noseclip forms a conforming seal at the bridge of the nose — the noseclip adjustment is a required step for achieving adequate fit in any cup-style N95. The RA3315 is the Regular Fit configuration; no exhalation valve is installed and exhalation passes through the filter media.

Compliance and Ratings

The KleenGuard 3300 RA3315 is NIOSH-approved under 42 CFR Part 84, confirming it meets the N95 filtration standard: at least 95% filter efficiency against solid and liquid aerosols not containing oil. OSHA 29 CFR 1910.134 (general industry) and 29 CFR 1926.103 (construction) require a written respiratory protection program, medical evaluation, and fit testing before workers use tight-fitting respirators including cup-style N95 designs. The RA3315's non-valved construction is the correct specification for environments where OSHA or facility policy prohibits exhalation valves — certain welding fume operations, food processing environments, and procedural settings where source control of exhaled particles is required. Verify the NIOSH approval number against the NIOSH NPPTL database before use in a regulated respiratory protection program.

Performance Assessment

The molded cup construction of the RA3315 provides a structural baseline that flat-fold designs cannot: the cup shape is fixed by the shell and does not collapse under breathing resistance or accumulated moisture during extended wear. Workers performing moderate physical activity in cool-to-temperate environments report less facial contact fatigue with cup-style designs because the filter media does not press against the mouth during inhalation load. The absence of an exhalation valve means all exhaled air passes through the N95 filter media — this increases exhalation breathing resistance compared to valved designs. In cool or temperate environments with moderate exertion, the non-valved RA3315 is appropriate; in high-heat environments or during sustained heavy work, the additional exhalation resistance can contribute to heat strain and should be weighed in the hazard assessment. Current availability is on lead time — fulfillment timing should be confirmed with Amazon before placing time-critical supply orders.

Strengths

• NIOSH-approved N95 under 42 CFR Part 84 — confirmed 95% minimum filter efficiency against non-oil aerosols
• Molded cup construction — maintains shape under humidity and breathing pressure; resists collapse during extended wear
• Non-valved design — compliant for environments where exhalation valves are restricted, including some food processing, procedural, and welding fume settings
• Two-strap headband — distributes retention force across crown and nape for stable fit over extended shift duration
• Adjustable noseclip — conforms to nose bridge geometry for improved upper-face seal
• 20-respirator box — crew-level supply quantity for daily changeout programs at $1.11/unit

Limitations

• Non-valved design increases exhalation breathing resistance — not ideal for sustained high-exertion work in hot environments; valved alternatives available in the disposable respirators collection
• Lead time availability — not shipping from immediate stock; confirm fulfillment timing before time-critical procurement planning
• Regular Fit only — no small-size configuration under this listing; workers requiring a smaller fit profile should evaluate options in the N95 respirators collection
• Fit test required — OSHA 29 CFR 1910.134 mandates individual fit testing before use; NIOSH approval confirms filtration efficacy, not seal performance for a given worker

Recommended Use Cases

The KleenGuard 3300 RA3315 is appropriate for construction workers, maintenance technicians, and general industry personnel in environments with confirmed particulate hazards — grinding, sanding, demolition, concrete work, and airborne dust — where a non-valved N95 is the specified requirement. Environments where OSHA or facility policy restricts exhalation valves should specify non-valved designs such as the RA3315. Workers in environments with oil-based mist or aerosol hazards require an R95 or P100 classification; see the respiratory protection collection. Surgical or procedural settings requiring fluid resistance require a surgical N95 designation, not a standard industrial N95.

Verdict

The KleenGuard 3300 RA3315 delivers NIOSH-approved N95 particulate filtration in a molded cup configuration at $22.19 for 20 respirators ($1.11 per unit). The non-valved design meets specification for environments where exhalation valve restriction applies. Availability is currently on lead time — confirm fulfillment timing before placing supply-critical orders. For the full N95 and disposable respirator selection, see the disposable respirators collection.