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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Fully operational. Shipping worldwide, on schedule.Customs & duties included in the price

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Reusable Respirator, Half Face Piece 7503, Use with Bayonet Cartridges/Filters (Not Included) for Gases, Vapors, Dust, Large Size

Product ID: 264123434

Details

Brand
3M
Colour
Blue
Material
Rubber
Number of Items
1
Size
L

💨3M CoolFlow valve for easier breathing

⚙️Dual-mode quick latch head harness

🛡️NIOSH-approved protection up to 10x PEL

¥12170

Duties & taxes included

In stock

Sold byAmazon JapanDelivered byDesertcartCustomer service byDesertcartReturns14 days · 30 with PRO

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Description

🛡️ Stay sharp, breathe easy, and lead the safety game.

FOG FREE VISION - Exhalation valve cover directs breath downward to reduce fogging and keep your view clear.
VERSATILE PROTECTION - Compatible with bayonet cartridges/filters to guard against gases, vapors, and particulates.
BREATHE WITH CONFIDENCE - Advanced CoolFlow valve reduces heat and moisture buildup for all-day comfort.
DURABILITY MEETS COMFORT - Premium silicone material minimizes pressure points while ensuring long-lasting wear.
EFFORTLESS FIT REMOVAL - Dual-mode head harness with one-hand quick latch design for seamless on/off transitions.

The 3M 7503 Reusable Respirator combines advanced silicone comfort with a proprietary CoolFlow valve to deliver superior breathability and durability. Featuring a dual-mode quick latch head harness for easy wear and removal, it reduces fogging with a smart exhalation valve cover. When paired with 3M bayonet cartridges and filters (sold separately), it offers NIOSH-approved protection against a wide range of airborne hazards, making it the go-to choice for professionals demanding reliable respiratory safety.

Specifications

ASIN	B008MCUULW
ASIN	B008MCUULW
Best Sellers Rank	#25,644 in Tools & Home Improvement ( See Top 100 in Tools & Home Improvement ) #29 in Reusable Respirators
Brand Name	3M
Color	Blue
Customer Reviews	4.8 4.8 out of 5 stars (2,471)
Customer reviews	4.8 4.8 out of 5 stars (2,471)
Date First Available	4 September 2012
Department	unisex-adult
Global Trade Identification Number	50051131370833
Included Components	Mask
Is Discontinued By Manufacturer	No
Item Package Quantity	1
Item Type Name	3M HALF FACEPIECE REUSABLE RESPIRATOR 7503/37083(AAD) LARGE 10 EA/CASE
Item Weight	0.31 Pounds
Item model number	7503/37083(AAD)
Manufacturer	3M
Manufacturer	3M
Material	Rubber
Material Features	Recyclable
Number of Items	1
Part Number	051131370833
Product Dimensions	17.78 x 25.4 x 14.61 cm; 138.98 g
Reusability	Reusable
Size	L
Style Number	7503/37083(AAD)
Unit Count	1.0 Count

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