---
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: "₨955"
currency: SCR
in_stock: true
reviews_count: 5
category: "3 M"
url: https://www.desertcart.sc/products/2339040-half-facepiece-reusable-respirator-assembly-kit-6391-size-large-p100
store_origin: SC
region: Seychelles
---

# Adjustable bayonet connection Lightweight 5 oz design NIOSH P100 certified filtration 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:** ₨955
**Availability:** ✅ In Stock

## Summary

> 🛡️ Breathe Boldly, Work Confidently — Your Ultimate Shield Against Airborne Hazards

## 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?** ₨955 with free shipping
- **Is it available?** Yes, in stock and ready to ship
- **Where can I buy it?** [www.desertcart.sc](https://www.desertcart.sc/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

- • **Sustainable & Cost-Effective:** Reusable design with replaceable 3M 2091 P100 filters extends product life and reduces waste.
- • **Custom Fit, Instant Confidence:** Easy-to-adjust head straps and bayonet cartridge connection ensure a secure, balanced seal every time.
- • **Versatile Safety for Tough Jobs:** Ideal for welding, soldering, asbestos removal, and exposure to heavy metals up to 10x PEL limits.
- • **Wear It All Day, Forget It's There:** Ultra-lightweight (5 oz) thermoplastic elastomer facepiece with soft, comfortable fit tailored for long shifts.
- • **Certified Protection, No Compromise:** NIOSH-approved P100 filters block 99.97% of airborne particles, including oil and non-oil based hazards.

## Overview

The 3M 6391 Half Facepiece Reusable Respirator Assembly Kit combines NIOSH-approved P100 filtration with a lightweight, comfortable half-face design. Engineered for professionals facing hazardous particles in welding, asbestos, and heavy metal environments, it features easy-to-adjust straps and a bayonet connection for a secure fit. This durable, reusable respirator includes replaceable 3M 2091 filters, offering reliable protection and cost efficiency for demanding industrial applications.

## 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 |
| Batteries Included? | No |
| Batteries Required? | No |
| Best Sellers Rank | #13,194 in Tools & Home Improvement ( See Top 100 in Tools & Home Improvement ) #22 in Reusable Respirators |
| Certification | NIOSH |
| Color | Gray |
| Customer Reviews | 4.4 4.4 out of 5 stars (1,903) |
| Date First Available | January 6, 2005 |
| Included Components | 3M 6000 Series Half Facepiece Reusable Respirator and two 3M 2091 P100 Particulate Filters |
| Is Discontinued By Manufacturer | No |
| Item Package Quantity | 1 |
| Item Weight | 5 ounces |
| Item model number | 6391 |
| Manufacturer | 3M |
| Material | Thermoplastic Elastomers |
| Part Number | 051131070030 |
| Pattern | Respirator Assembly |
| Product Dimensions | 5 x 7 x 7 inches |
| Size | 1 Count (Pack of 1) |
| Special Features | Adjustable Headband, Lightweight |
| Style | Half Facepiece Reusable Respirator |

## 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.

### ⭐⭐⭐⭐⭐ Very good mask seals to your face nicely super easy to ...
*by J***S on November 24, 2014*

Very good mask seals to your face nicely super easy to change filters you can do it without taking it off. it protects you from more than harmful dust too my first one saved my face i caught a bolt with a 6000 rpm 4 hp grinder i lost grip with both hands and it spun around and the aluminum cased head hit me right in the mouth my mask took it all i was just fine. Not too difficult to wash when they get funky. Straps are not uncomfortable around neck or head after your break in period that is you will get a little rug burn at first. The straps will wear out over time with every day use they get longer and longer until they no longer have any stretch left but im sure all elastic bands do. I sand and polish aluminum so i fling sludge at mine all day the filter will last a good amount of time under these conditions. Not enough airflow on the way out though you may fog your safety glasses from time to time when your breath comes out of the top. here is the best price ive found so far too

## 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 Seychelles*
*Store origin: SC*
*Last updated: 2026-02-23*