Fibre-Metal 4178DGN Face-Shield Window — Z87.1

The Fibre-Metal 4178DGN is an ANSI Z87.1 basic-impact face-shield window with full brow-to-chin coverage for general manufacturing and maintenance — a replacement visor that mounts to compatible Fibre-Metal face-shield headgear (sold separately) and is secondary protection worn over primary safety glasses or goggles.

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Why the Fibre-Metal 4178DGN is a replacement window, not a whole shield

Face-shield programs run on fresh windows: the visor scratches and hazes long before the headgear wears out, so keeping spare windows on hand keeps the shield protective. The 4178DGN is that consumable — a hard-coated optical-grade window with full brow-to-chin coverage and side flanges for lateral protection, meeting ANSI Z87.1 basic impact for general industry. It mounts to compatible Fibre-Metal face-shield headgear, which is sold separately. As face shields go, this is the Fibre-Metal replacement-window pick, and the best face shields guide and the glasses vs face shields guide explain how it layers with primary eyewear. It keeps a shield in service with a fresh window.

What the Fibre-Metal 4178DGN listing documents

From the published specs: an ANSI Z87.1 basic-impact face-shield window; a hard-coated optical-grade lens; full brow-to-chin coverage with side flanges; and a design for use with compatible Fibre-Metal headgear. The tint is not stated in these specs, so confirm it on the listing. These are the listing's replacement face shield window and polycarbonate face shield visor credentials in an industrial face shield. Confirm the tint and Z87 marking on the listing.

How the Fibre-Metal 4178DGN compares to other face and eye protection

For a Fibre-Metal window preformed for dual-crown headgear, the Fibre-Metal 6750CL; for a Bullard clear window, the Bullard BUD4118CL; for an ERB replacement window, the ERB 15151; for a complete shield with headgear, the 3M 8270 Deluxe; and for the goggle you wear under it, the Uvex Astrospec. The eye protection buyer's guide covers the range.

Choosing the right window and eye protection

Match the window, tint, headgear, and primary eyewear to the hazard. Browse the eye protection and safety goggles collections; for the standard, the ANSI Z87.1 guide; and for shield selection, the grinding and cutting shields guide and the best eye protection guide.

Where it fits by job and crew orders

The 4178DGN suits general manufacturing, maintenance, and metalworking programs running Fibre-Metal face-shield headgear that need replacement windows in stock — see the manufacturing eyewear guide and the mechanics eyewear guide. Pair the window with the safety glasses or goggles it supplements, and keep the eyewear underneath clear — see the anti-fog eyewear collection and the anti-fog guide. Confirm the tint, headgear compatibility, and Z87 marking on the listing, and retire the window when it is scratched. For crew orders, quantity purchasing runs through a free Amazon Business account — volume pricing, PO numbers at checkout, and tax-exempt eligibility for qualifying organizations, with the walkthrough linked in our footer.