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This topic has appeared in the trending rankings 1 time(s) in the past year. While it does not trend frequently, its appearance suggests a renewed or concentrated surge of public interest.
Based on Wikipedia pageviews and search interest, this topic gained significant attention on the selected date.
C-4_Protective_Mask entered the ranking for the first time today at position #. This is its highest position ever recorded.
This topic has appeared in the English Wikipedia rankings 1 time. It first appeared on 2026-05-20 and was most recently seen on 2026-05-20.
The C4 CBRN Protective Mask is the current issued gas mask of the Canadian Armed Forces. The C4 is a negative-pressure, full-face respirator with an ergonomic butyl rubber face piece. With its stretch-fabric mesh head harness and two simple adjustment pull straps, the C4 respirator is easily donned and doffed.
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