MSA 10087422 left/RIGHT™ Cap-Mounted Earmuff – High Attenuation 28 dB NRR Hearing Protection

The MSA 10087422 left/RIGHT™ Passive Cap-Mounted Earmuff is engineered for maximum hearing protection in high-noise industrial environments. With a high attenuation rating of 28 dB NRR, it is ideal for workers exposed to continuous or extreme noise levels such as mining operations, paper mills, heavy machinery zones, airports, oil & gas fields, and engine rooms.

Built with a dielectric, metal-free construction, this earmuff ensures safety in electrical environments while maintaining durability in harsh industrial conditions. The anatomically designed left and right ear cups provide a precision fit that follows the natural shape of the head, improving sealing efficiency and reducing pressure points.

Its high-density ABS ear cups, multi-layer acoustic foam cushions, and flexible multi-axis mounting arms deliver both durability and comfort. The helmet-mounted design allows seamless integration with MSA slotted hard hats and supports multiple wearing positions for active use, standby, or storage.

Key Benefits

1. High attenuation protection with 28 dB NRR for extreme noise environments
2. Anatomical left/right ear cup design improves seal and comfort
3. Dielectric construction ensures safety in electrical workplaces
4. Lightweight counterbalanced design reduces neck fatigue
5. Multi-position adjustment for active, standby, and storage use
6. Durable ABS shell withstands harsh industrial conditions
7. Compatible with MSA slotted safety helmets (V-Gard series)

Technical Specifications

• Brand: MSA Safety
• Model Number: 10087422
• Series: left/RIGHT™ (High Attenuation)
• Product Type: Cap-Mounted Passive Earmuff
• Noise Reduction Rating (NRR): 28 dB
• SNR: 31 dB
  • H = 32 dB
  • M = 28 dB
  • L = 21 dB
• Attenuation Level: High
• Color: Safety Yellow
• Construction: Dielectric (Metal-Free)
• Ear Cup Material: Impact-Resistant ABS Plastic
• Cushion Material: Multi-layer Acoustic Foam with PVC Skin
• Mounting Type: Helmet Mounted
• Compatibility: MSA Slotted Hard Hats (V-Gard Series)
• Weight: ~326 g (0.72 lb)
• Length: 196 mm (7.71 in)
• Width: 117 mm (4.60 in)
• Height: 173 mm (6.81 in)