SKU: FM-1 / FM-2 / FM-3 / FM-3E
FM-1 / FM-2 / FM-3 / FM-3E Family Series Earmuffs
Foldable headband earmuff family in three attenuation tiers plus a cap-mounted version, positioned for loud machinery, power tools, loud music, and noisy environments generally. FM-1 SNR 31dB, FM-2 SNR 33dB, FM-3 SNR 34dB, FM-3E (cap-mount) SNR 32dB.
Specifications
| Shell family | FM-1 (entry tier), FM-2 (mid tier), FM-3 (top tier, headband), FM-3E (cap-mount, 25mm/30mm adaptor plug option) |
|---|---|
| SNR / NRR / SLC80 (FM-1) | SNR 31dB, NRR 24dB, SLC80 31dB, Class 5 |
| SNR / NRR / SLC80 (FM-2) | SNR 33dB, NRR 26dB, SLC80 33dB, Class 5 |
| SNR / NRR / SLC80 (FM-3) | SNR 34dB, NRR 28dB, SLC80 34.6dB, Class 5 |
| SNR (FM-3E, cap-mount) | 32dB — H32dB / M31dB / L24dB. NRR not separately published; same acoustic family as FM-3 |
FAQ
What's the practical difference between FM-1, FM-2, and FM-3?
Same foldable shell design in three attenuation tiers — FM-1 is the lightest/lowest rated, FM-3 the highest. Pick based on the noise level of the target environment rather than assuming higher is always better; a higher-attenuation earmuff can make it harder to hear speech or warning signals in moderate-noise settings.
Does FM-3E have the same rating as FM-3?
It's the cap-mounted version of the FM-3 shell, tested slightly differently (SNR 32dB vs FM-3's 34dB) due to the mount hardware — treat FM-3E's own published number as the rating for that specific SKU.
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Last updated: Sat Jul 18 2026