NATIONAL ASSOCIATION SUPPLY CO–OPERATIVE, INC. 2031 Reiser Ave SE – New Philadelphia, Ohio 44663 800-321-3396 – FAX 800-992-6679 – www.nascoop.com
This product features a patented design exhalation valve that increases user comfort by making breathing exhalation easier. The unique valve cover design also enhances the protection of the exhalation valve from debris.
