---
product_id: 2339040
title: "Half Facepiece Reusable Respirator Assembly Kit 6391, Size Large, P100, Lightweight, Comfortable, Easy to Adjust, Includes 2091 Particulate Filter, Welding, Soldering, Asbestos"
brand: "3m"
price: "R1279"
currency: ZAR
in_stock: true
reviews_count: 8
category: "3 M"
url: https://www.desertcart.co.za/products/2339040-half-facepiece-reusable-respirator-assembly-kit-6391-size-large-p100
store_origin: ZA
region: South Africa
---

# Reusable with replaceable filters Lightweight 5.04 oz design NIOSH P100 certified protection Half Facepiece Reusable Respirator Assembly Kit 6391, Size Large, P100, Lightweight, Comfortable, Easy to Adjust, Includes 2091 Particulate Filter, Welding, Soldering, Asbestos

**Brand:** 3m
**Price:** R1279
**Availability:** ✅ In Stock

## Summary

> 🛡️ Breathe Boldly, Work Confidently — Your Ultimate Industrial Armor

## Quick Answers

- **What is this?** Half Facepiece Reusable Respirator Assembly Kit 6391, Size Large, P100, Lightweight, Comfortable, Easy to Adjust, Includes 2091 Particulate Filter, Welding, Soldering, Asbestos by 3m
- **How much does it cost?** R1279 with free shipping
- **Is it available?** Yes, in stock and ready to ship
- **Where can I buy it?** [www.desertcart.co.za](https://www.desertcart.co.za/products/2339040-half-facepiece-reusable-respirator-assembly-kit-6391-size-large-p100)

## Best For

- 3m enthusiasts

## Why This Product

- Trusted 3m brand quality
- Free international shipping included
- Worldwide delivery with tracking
- 15-day hassle-free returns

## Key Features

- • **Featherlight Comfort:** At just over 5 ounces, the soft thermoplastic elastomer facepiece and adjustable straps ensure all-day wearability without fatigue.
- • **Custom Fit, No Fidget:** Easy-to-adjust head straps and bayonet connection deliver a secure, personalized seal that stays put during intense tasks.
- • **Certified Elite Protection:** NIOSH-approved P100 filters block 99.97% of airborne particles, including oil and non-oil based contaminants.
- • **Versatile Industrial Shield:** Perfect for welding, soldering, asbestos removal, and exposure to hazardous metals—trusted by pros tackling tough environments.
- • **Sustainable & Cost-Effective:** Disassemble, clean, and swap out filters to extend product life and reduce waste—smart protection that pays off.

## Overview

The 3M 6391 Half Facepiece Reusable Respirator Assembly Kit combines NIOSH-approved P100 particulate filters with a lightweight, comfortable half facepiece design. Engineered for professionals in welding, soldering, and hazardous material environments, it offers a secure, adjustable fit with replaceable filters for extended use. This durable respirator balances high-level protection with all-day comfort, making it an essential tool for millennial managers who demand safety without compromise.

## Description

The 3M 6391 Half Facepiece Respirator Assembly includes the 3M Half Facepiece Respirator 6300 and 3M P100 Particulate Filters 2091. Helps provide respiratory protection in environments containing certain oil and non-oil based particles. This assembly includes a 3M 6000 Series Half Facepiece Reusable Respirator and two 3M 2091 P100 Particulate Filters. This assembly is NIOSH approved for environments containing certain oil and non-oil based particles. When properly fitted, this respirator helps provide protection in a variety of applications including welding, brazing, torch cutting, metal pouring, soldering, and exposure to lead asbestos, cadmium, arsenic, and MDA at concentrations up to 10 times the Permissible Exposure Limit (PEL). This respirator is remarkably comfortable, soft, and lightweight, and features easy-to-adjust head straps. The swept-back design of the cartridges helps improve balance and visibility. Easy-to-adjust head straps allow for a customized fit to the user. When used to capacity, the included cartridges can be removed and replaced with new P100 Filter/Cartridges or other NIOSH approved 3M 2000 or 2200 Series Filters or 6000 Series Cartridges. The respirator can also be disassembled, cleaned, and reused, extending the life and cost effectiveness of the product. NIOSH, a Federal government regulatory agency, has tested and approved the 6000 Series with 3M cartridges, filters or supplied air systems to help reduce breathing certain airborne contaminants. The 6000 Series is NIOSH approved for negative air purifying and positive pressure dual airline applications. The respirator comes with a P100 filter, which is replaceable. This half facepiece respirator may be used with any of these replacements: 3M Cartridge 6000 Series; 3M Filters 2000, 2200, 7000 or 5000 Series; or 3M Dual Airline Systems against a variety of gases, vapors, and particulate hazards according to NIOSH approvals. Breathing hazardous particles, gases and vapors can be harmful to your health.

Review: Good fitting and effective - It works, it fits, and it's comfortable. I previously had the medium size which kinda-sorta fit but I found I was constantly fiddling with it to make sure I maintained a good seal. With this one I put it on and forget about it. There is another type of mask that has a "drop down" feature, which means when you undo the clasps at the back the mask drops down off your face. That's handy if you want to pop it off for a minute to talk/eat/drink etc but it's not a big deal to lift this one out of the way if you need to. Some reviews commented on it coming without the filters. Mine came with the filters, as expected. Not sure if some people are ordering from third party sellers or what. I'm still using the filters that came with my previous respirator and they fit just fine. I wore my respirator for several hours while pulling down an elderly lath-and-plaster wall and some 1930s drywall. Previously I'd used a paper dust mask for that kind of work and found I got enough dust in my nose to be annoying. After some hours of pulling stuff down and cleaning up dust (including getting quite close to piles of dust as I swept them into a dustpan, prior to sucking up the remainder in a shop vac), virtually nothing got through. The very small amount that got through suggested I didn't have the mask fitted quite perfectly, but obviously it was pretty close. For my purposes I'm not hugely bothered if I don't have a perfect seal - my usage is more for building dust rather than specifically hazardous material. That said, this thing feels like it would stand up just fine if I was removing nastier material than plaster dust.
Review: Works great, so much better seal than the cloth N95s - Works great, so much better seal than the cloth N95s. Not exactly comfortable but not bad, I get used to it. Can't believe how reasonably priced it is. Includes the two pink filters, which have a 5-year shelf life (though will need to be replaced sooner if used a lot and they deteriorate). Thorough instructions for wearing, testing seal, checking for deterioration, etc. Should've bought one of these long ago. Bought just recently to deal with Bay Area smoke from Napa/Santa Rosa fires. OK, a few days of use later, I will add a couple of caveats. First, it has a very noticeable rubber smell. I get used to it more or less, but it's not real pleasant. Also, I am constantly readjusting it around my nose due to discomfort and even a little pain on the bridge of my nose. I guess this goes with getting a great seal, which is of prime importance, and it may not happen with other faces/noses, I don't know. Still, I will maintain my 5-star rating, as it really works great for the intended purpose. The difference in how my lungs and throat feel on these bad-air days when I wear it vs when I don't is substantial.

## Features

- NIOSH APPROVED: For environments containing certain oil and non-oil based particles
- ASSEMBLY INCLUDES: Half facepiece respirator and particulate filter 2091 P100
- HALF FACEPIECE DESIGN: Combines comfort and convenience
- REMARKABLY COMFORTABLE: Soft, lightweight facepiece and easy-to-adjust head straps
- CONNECTION TYPE: Bayonet

## Technical Specifications

| Specification | Value |
|---------------|-------|
| ASIN | B001NDN29O |
| Best Sellers Rank | #9,607 in Tools & Home Improvement ( See Top 100 in Tools & Home Improvement ) #17 in Reusable Respirators |
| Brand Name | 3M |
| Closure Type | Strap |
| Color | Gray |
| Customer Reviews | 4.5 4.5 out of 5 stars (1,914) |
| Filter Class | P100 |
| Fit Type | Regular |
| Global Trade Identification Number | 50051131070030 |
| Included Components | 3M 6000 Series Half Facepiece Reusable Respirator and two 3M 2091 P100 Particulate Filters |
| Item Package Quantity | 1 |
| Item Type Name | Respirator |
| Item Weight | 0.32 Pounds |
| Manufacturer | 3M |
| Material | Thermoplastic Elastomers |
| Material Features | Recyclable |
| Number of Items | 1 |
| Part Number | 051131070030 |
| Pattern | Respirator Assembly |
| Product Style | Half Facepiece Reusable Respirator |
| Recommended Uses For Product | Welding |
| Reusability | Reusable |
| Size | 1 Count (Pack of 1) |
| Special Features | Adjustable Headband, Lightweight |
| Specification Met | NIOSH |
| Style Number | 6391 |
| Unit Count | 1 Count |

## Product Details

- **Brand:** 3M
- **Color:** Gray
- **Filter Class:** P100
- **Number of Items:** 1
- **Size:** 1 Count (Pack of 1)

## Images

![Half Facepiece Reusable Respirator Assembly Kit 6391, Size Large, P100, Lightweight, Comfortable, Easy to Adjust, Includes 2091 Particulate Filter, Welding, Soldering, Asbestos - Image 1](https://m.media-amazon.com/images/I/71BsLBxaikL.jpg)

## Customer Reviews

### ⭐⭐⭐⭐⭐ Good fitting and effective
*by A***W on February 21, 2018*

It works, it fits, and it's comfortable. I previously had the medium size which kinda-sorta fit but I found I was constantly fiddling with it to make sure I maintained a good seal. With this one I put it on and forget about it. There is another type of mask that has a "drop down" feature, which means when you undo the clasps at the back the mask drops down off your face. That's handy if you want to pop it off for a minute to talk/eat/drink etc but it's not a big deal to lift this one out of the way if you need to. Some reviews commented on it coming without the filters. Mine came with the filters, as expected. Not sure if some people are ordering from third party sellers or what. I'm still using the filters that came with my previous respirator and they fit just fine. I wore my respirator for several hours while pulling down an elderly lath-and-plaster wall and some 1930s drywall. Previously I'd used a paper dust mask for that kind of work and found I got enough dust in my nose to be annoying. After some hours of pulling stuff down and cleaning up dust (including getting quite close to piles of dust as I swept them into a dustpan, prior to sucking up the remainder in a shop vac), virtually nothing got through. The very small amount that got through suggested I didn't have the mask fitted quite perfectly, but obviously it was pretty close. For my purposes I'm not hugely bothered if I don't have a perfect seal - my usage is more for building dust rather than specifically hazardous material. That said, this thing feels like it would stand up just fine if I was removing nastier material than plaster dust.

### ⭐⭐⭐⭐⭐ Works great, so much better seal than the cloth N95s
*by F***L on October 16, 2017*

Works great, so much better seal than the cloth N95s. Not exactly comfortable but not bad, I get used to it. Can't believe how reasonably priced it is. Includes the two pink filters, which have a 5-year shelf life (though will need to be replaced sooner if used a lot and they deteriorate). Thorough instructions for wearing, testing seal, checking for deterioration, etc. Should've bought one of these long ago. Bought just recently to deal with Bay Area smoke from Napa/Santa Rosa fires. OK, a few days of use later, I will add a couple of caveats. First, it has a very noticeable rubber smell. I get used to it more or less, but it's not real pleasant. Also, I am constantly readjusting it around my nose due to discomfort and even a little pain on the bridge of my nose. I guess this goes with getting a great seal, which is of prime importance, and it may not happen with other faces/noses, I don't know. Still, I will maintain my 5-star rating, as it really works great for the intended purpose. The difference in how my lungs and throat feel on these bad-air days when I wear it vs when I don't is substantial.

### ⭐⭐⭐⭐⭐ Excellent product.
*by J***H on October 28, 2017*

Fits great, good seal. Easy to breath, does not fog up my safety glasses. Reasonably comfortable after wearing for hours at a stretch (note: I did not wear this over 75-deg weather, that was fine). The product shipped without the filters despite the 3M bag showing that this would have filters in that bag (as described). A very simple call with Amazon fixed this as they shipped me filters which I had two-days later. (I bought the Gas Mask along with a spare set of filters so I was able to use this immediately - the filters Amazon shipped me are now my back-up set so other than a 5-minute phone call this issue had little impact to me.) Filter life: I have been using this while using a leaf vacuum in the fall (which kicks up a lot of dust, dirt, and fine bits of leaves) so far for about 20-hours, the filters show some sign of use (as one would hope) but have no indication that they are close to being at end of life ... ie, I would expect to be able to use the same filters for probably at least 50-hours of this type of work.

## Frequently Bought Together

- 3M Half Facepiece Reusable Respirator Assembly Kit 6391, Size Large, P100, Lightweight, Comfortable, Easy to Adjust, Includes 2091 Particulate Filter, Welding, Soldering, Asbestos
- 3M 2091 P100 Particulate Filter, 3 Pairs
- 3M Half Facepiece Reusable Respirator Assembly Kit 6391, Size Medium, P100, Lightweight, Comfortable, Easy to Adjust, Includes 2091 Particulate Filter, Welding, Soldering, Asbestos

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*Product available on Desertcart South Africa*
*Store origin: ZA*
*Last updated: 2026-04-23*