Ideal for industrial and construction environments, the Howard Leight™ FirmFit® refill offers high-performance hearing protection with maximum comfort. Designed for use with the Leight Source™ 500 or HL400 dispensers, each box contains 500 pairs of firm yet soft PVC foam earplugs. With a Noise Reduction Rating (NRR) of 30 dB, they deliver reliable attenuation in medium-to-high-noise settings. The bright orange color enhances instant compliance checks, and the slow foam recovery makes insertion easy and precise .

Crafted for workers who prefer the tactile assurance of firm foam, these plugs exert 29–40% less expansion pressure, reducing fatigue while maintaining a secure seal.
The one-size-fits-all cylindrical design ensures broad compatibility, making them a go-to choice for facilities that require dependable and convenient hearing protection.

Key Features

Firm-Foam Comfort – Softer feel with 29–40% less ear-canal pressure compared to standard cylinder plugs
High Noise Reduction – Rated NRR 30 dB; ideal for noisy environments
Slow Recovery Foam – Easier to roll and insert with sufficient time before expansion
High-Visibility Color – Bright orange makes compliance checks quick and easy
Convenient Refill Format – Bulk packaging (500 pairs) designed for Leight Source 500 and HL400 dispensers

Intended Use

Perfect for construction, manufacturing, utilities, transportation, mining, and forestry industries, these earplugs ensure comfortable, long-lasting noise protection for workers. The refillable dispenser format provides a cost-effective, hygienic solution for large teams and improves ease of compliance monitoring.

Product Specifications

Product Name: Howard Leight™ FirmFit® Earplug Refill
Model / Part #: FF‑1‑D (also referenced as FF‑a‑D)
Packaging Quantity: 500 pairs per box
Earplug Type: Disposable, uncorded, cylindrical foam
Material: Soft PVC foam, dimpled finish
Noise Reduction Rating: 30 dB (NRR) / SNR 37 dB
Recovery Rate: Slow expansion for insertion ease
Insertion Method: Roll down, insert and hold
Color: High-visibility orange
Dispenser Compatibility: Leight Source 500 (LS‑500), HL400

Certifications and Standards

ANSI S3.19‑1974 – USA hearing protection standard
CSA Class AL – Canadian certification
EN 352 – European standard for hearing protectors