{"product_id":"3m-7000009666-peltor-optime-earmuffs-21-db-nrr","title":"3M 7000009666 Peltor Optime Earmuffs 21 Db Nrr","description":"\u003ch3\u003eProduct Description\u003c\/h3\u003e\n\u003cp\u003eThe 3M 7000009666 is a behind-the-head style hearing protector from the Peltor Optime line, designed for environments with noise levels up to 95 dBA. The earmuffs carry a Noise Reduction Rating (NRR) of 21 dB and are certified CSA Class B. Liquid and foam filled cushions provide a consistent acoustic seal while keeping weight low at 0.55 pounds. Low-profile earcups are engineered to sit close to the head, reducing interference with helmets, safety glasses, face shields, and other PPE commonly worn on the job site or in industrial settings. Licensed trades and safety-conscious professionals in construction, manufacturing, and utilities rely on this style for all-day wearability.\u003c\/p\u003e\n\u003cp\u003eThis earmuff is suited for residential and commercial job sites, industrial facilities, manufacturing floors, and utility work environments where sustained noise exposure is a concern. The behind-the-head configuration is particularly practical when a hard hat or bump cap occupies the top of the head. The low-profile earcup design allows simultaneous use with helmets and eyewear without compromising the acoustic seal. Color-coded earcups aid supervisors and safety officers in confirming compliance at a glance across a work area.\u003c\/p\u003e\n\u003ch4\u003eKey Features\u003c\/h4\u003e\n\u003cul\u003e\n  \u003cli\u003e21 dB NRR rating for environments up to 95 dBA\u003c\/li\u003e\n  \u003cli\u003eBehind-the-head band configuration compatible with hard hats and helmets\u003c\/li\u003e\n  \u003cli\u003eStainless steel construction resists bending and warping under repeated use\u003c\/li\u003e\n  \u003cli\u003eEarcup pivot points tilt to conform to individual head geometry for a better seal\u003c\/li\u003e\n  \u003cli\u003eLiquid and foam filled cushions reduce weight and maintain comfort during extended wear\u003c\/li\u003e\n  \u003cli\u003eColor-coded design supports compliance sighting on the job site\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch4\u003eCompatibility\u003c\/h4\u003e\n\u003cp\u003eDesigned for use as a behind-the-head hearing protector compatible with most hard hats, safety helmets, safety eyewear, and face shields commonly used in construction, industrial, and utility trades.\u003c\/p\u003e\n\u003ch4\u003eInstallation Notes\u003c\/h4\u003e\n\u003cp\u003eNo tools are required to fit or adjust these earmuffs. Ensure the band is seated securely behind the head and the earcups form a complete seal around both ears before entering a noise-hazardous area. Inspect cushions regularly for cracks, hardening, or deformation that can degrade the acoustic seal. Replace cushions or the full unit per your facility hearing conservation program requirements under OSHA 29 CFR 1910.95.\u003c\/p\u003e\n\u003ch4\u003eTechnical Specifications\u003c\/h4\u003e\n\u003cul\u003e\n  \u003cli\u003e\n\u003cstrong\u003eNoise Reduction Rating (NRR)\u003c\/strong\u003e: 21 dB\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eMaximum Rated Noise Level\u003c\/strong\u003e: 95 dBA\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eCertification\u003c\/strong\u003e: CSA Class B\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eWear Style\u003c\/strong\u003e: Behind-the-Head Headband\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eCushion Fill\u003c\/strong\u003e: Liquid and Foam\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eFrame Material\u003c\/strong\u003e: Stainless Steel\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eWeight\u003c\/strong\u003e: 0.55 pounds\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eLength\u003c\/strong\u003e: 22.88 inches\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eWidth\u003c\/strong\u003e: 14.63 inches\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eHeight\u003c\/strong\u003e: 7.88 inches\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eUPC\u003c\/strong\u003e: 10093045080622\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch4\u003eStandard Information\u003c\/h4\u003e\n\u003cul\u003e\n  \u003cli\u003e\n\u003cstrong\u003eBrand\u003c\/strong\u003e: 3M\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eManufacturer Part Number\u003c\/strong\u003e: 7000009666\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"3M","offers":[{"title":"Default Title","offer_id":51347480478002,"sku":"7000009666","price":223.54,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0270\/4519\/9983\/files\/310536194.jpg?v=1782106310","url":"https:\/\/voomisupply.com\/products\/3m-7000009666-peltor-optime-earmuffs-21-db-nrr","provider":"Voomi Supply","version":"1.0","type":"link"}