How do you figure your size?

I spoke with 3M tech support, and the guy explained it like this: "70% of users will fit the size medium. 23% will fit size large. The rest will fall in the small category." I assume that the reason 93% fit medium to large because men typically are the users. I am 6', 225lb guy that wears a medium. My 5'4" wife uses small. I can almost wear a large, but larges are set for people with long faces.

What filters come with it?

None - you order the filters separately. There are several/many different filters depending on what your application is. Simply sawdust? Chemical fumes? Buy the filters that fit your use.

Even after reading the q&a i'm still confused as to which filter i need. i just need dust particle filtration for woodworking. shape/model #?

A set of the 3M P100 filters work great. I use the 2091 model for woodworking. The P is for particulate and the 100 means it filters 100%. For anything with fumes like finishes I use a paint set of filters like the 3M 6001

What is the difference between this mask and the 3m(tm) half facepiece respirator assembly 6291 ?

This one is made with silicone that seals against your face which is more comfortable and durable. If you plan on wearing it often or for long periods of time get this one.

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Reusable Respirator Half Facepiece 7501, NIOSH, 3M Cool Flow Valve, Dual Airline Supplied Air Compatible, Integrated Dropdown Suspension, Bayonet Connections, For Chemical Handling, Painting, Small

Product ID: 21515278

Details

Brand
3M
Color
Gray
Material
Silicone
Number of Items
1
Size
Small

⚙️Bayonet cartridge fit

❄️3M Cool Flow valve

🛡️NIOSH-approved safety

399.21 DT

Duties & taxes included

In stock

Sold byAmazon TunisiaDelivered byDesertcartCustomer service byDesertcartReturns14 days · 30 with PRO

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Description

🛡️ Breathe Boldly, Work Confidently — Safety Meets Comfort in Every Breath

EFFORTLESS BREATHABILITY - Proprietary 3M Cool Flow valve reduces heat and moisture buildup for all-day comfort.
DURABLE COMFORTABLE SILICONE - Advanced silicone material delivers long-lasting wearability without sacrificing comfort.
CERTIFIED INDUSTRIAL PROTECTION - NIOSH-approved respirator ensures compliance and trusted safety for high-risk environments.
CUSTOMIZABLE FIT QUICK ACCESS - Integrated dropdown suspension with dual-mode head harness offers easy one-hand on/off and pressure relief.
VERSATILE CARTRIDGE COMPATIBILITY - Bayonet connections support a wide range of 3M cartridges and filters for multi-hazard protection.

The 3M 7501 Reusable Respirator Half Facepiece combines NIOSH-certified protection with advanced silicone comfort and the innovative Cool Flow valve to reduce heat and moisture. Designed for professional use in chemical handling, painting, welding, and more, it features quick-release dropdown suspension and bayonet cartridge compatibility for versatile, durable respiratory defense.

Specifications

ASIN	B008MCUS28
Best Sellers Rank	#3,364 in Tools & Home Improvement ( See Top 100 in Tools & Home Improvement ) #14 in Reusable Respirators
Brand	3M
Brand Name	3M
Color	Gray
Customer Reviews	4.7 out of 5 stars 1,423 Reviews
Fit Type	Regular
Global Trade Identification Number	50051131370819
Included Components	Mask
Item Package Quantity	1
Item Type Name	reusable-respirator
Item Weight	91 Grams
Manufacturer	3M
Material	Silicone
Material Features	Recyclable
Number of Items	1
Part Number	051131370819
Product Style	Half Face Cover
Reusability	Reusable
Size	Small
Special Feature	Exhalation Valve, Reusable
Special Features	Exhalation Valve, Reusable
Style Number	7501
Unit Count	1 Count
Warranty Description	Manufacturer

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399.21 DT

Duties & taxes included

In stock

Sold byAmazon TunisiaDelivered byDesertcartCustomer service byDesertcartReturns14 days · 30 with PRO

Buyer Protection · Full refund if your order doesn't arrive as described.

Desertcart purchases this item on your behalf and handles shipping, customs, and support to Tunisia.

Secure transaction

Trustpilot

TrustScore 4.5 | 7,300+ reviews

Yusuf A.

Fantastic experience overall. Will recommend to friends and family.

1 month ago

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Customer service was outstanding when I had questions about the product.

2 days ago

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