Is half mask size important?
Face Size and Shape
Face size and shape are important considerations when selecting RPE. The mask must fit the wearer’s facial features to create a seal and provide protection. Respirators are available in a range of sizes to fit different facial dimensions. To ensure a good fit, face shape and size must be considered and, if possible, measured prior to selection.
Respirator sizes are based on dimensions given in international standard ISO 16976-2, Anthropometrics. Five headform sizes are described in the standard: Small, Short-Wide, Medium, Long-Narrow, and Large.
The five headforms are derived from measured facial dimensions of human test subjects and are used for designing respiratory protective equipment as well as helping with selection. Respirators are designed to fit specific size designations and are tested on the relevant headform size.
Size Selection Guide
Force? Size Guide is available to measure facial dimensions in order to check whether a Small (S), Medium (M), or Large (L) mask would provide the best fit.
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The Force?8 half mask and Force?10 Typhoon? full face mask are available in Small (S), Medium (M), and Large (L) sizes to provide a great fit for a wide range of users.
The Force?8 half mask is available in an additional size, Short-Wide (SW), which provides an alternative fit to Small (S) and Medium (M) masks. The Force?8 SW is designed to fit a different facial profile with a slightly wider nose bridge.?
Have any more respiratory protection questions? Take a look at our?respiratory protection faq!
Find out more about our?range of respiratory protection.
Take a look at our new?respiratory guide.
How can we help?
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If you have any questions please?contact us?and our team will be happy to help with supply, usage or correct application of our products.
Chief Executive at JSP Ltd, ACA
2 年And here are the ISO Headforms We have Large, Medium, Small and Short/Wide JSP Force range respirators…
Chief Executive at JSP Ltd, ACA
2 年Mask sizing is very important to ensure an optimal fit. We started out designing Force 8 and Force 10 in 2011 bottom up. We started out using actual ISO Digital Headform 3D data. This anthropometric data was gathered from 3,997 test subjects during the 2003 NIOSH survey. It enabled parameters for new headforms in five size categories which were developed by the National Personal Protective Technology Laboratory (NPPTL) of NIOSH. JSP design team 3D-mapped the data to ensure the most ergonomic fit across each Digital Headform. This has enabled the most efficient half mask design. When coupled with JSP’s unique hinge action and award-winning patented Press To Check Filters you have a fabulous high-end and top performing RPE solution that protects better and saves you money. JSP’s initial ergonomic designs from using anthropometric ISO Headform 3D data to get the most efficient fit is another (and not often mentioned) part of the success story behind the JSP Force range of respirators.
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2 年This is really useful information. I measured up for one of the force8 half masks and know that I am a medium!