Description
MCR Safety Law LW3 is a foam-lined rimless wraparound pair of safety glasses with clear frame. Clear lens with UV-AF anti-fog coating; MCR Safety lists 90% visible light transmission. MCR Safety lists it ANSI/ISEA Z87.1+ (high impact), CSA Z94.3. Dielectric (no metal parts) as stated by MCR Safety. Sold by the dozen. Part of the Law series. Ships in 1–2 business days; most orders arrive in 3–7 business days.
MCR Safety LW3 specifications
| Item | MCR Safety data |
|---|---|
| Part number | LW310AF |
| MCR Safety style | LW3 |
| Series | Law |
| MCR Safety description | Law LW3 Series · Foam Lined Safety Glasses · Soft Secure TPR Nose Piece · TPR Temple Inserts · Lightweight 24.5 grams |
| ANSI Z87.1 mark | Z87.1+ |
| Lens Tint | Clear |
| Lens Coating (MCR Safety names) | UV-AF Anti-Fog |
| Visible light transmission (VLT) | Clear 90% |
| Blue light blocked (ISO 12312-1) | Clear 14% |
| Frame Style | Foam-Lined; Rimless; Wraparound |
| Frame Color | Clear |
| Temple Color | Clear |
| Temple Material | Nylon |
| Temple Type | Bayonet |
| Frame Size | Large |
| Seal Type | Dust |
| MCR Safety attributes | Dielectric |
| Packaging | Dozen White Box |
| MCR Safety sells by | Pair |
| Case pack (MCR Safety file) | 144 per case |
Source: MCR Safety product page https://mcrsafety.com/glasses/lw3, fetched Nov 6 2026; MCR Safety specification sheet LW3; MCR Safety price and packaging file, Oct 21 2026.
Ratings and standards
| Standard | Rating as published by MCR Safety |
|---|---|
| ANSI/ISEA Z87.1 eye and face protection | Z87+ as MCR Safety lists it; MCR Safety states it meets ANSI/ISEA Z87.1-2025. The + mark is the high-impact level of the standard (high-velocity and high-mass impact tests); the basic level carries Z87 without the +. |
| CSA Z94.3 eye and face protectors (Canada) | Yes, as MCR Safety lists it |
| Ultraviolet | Ultraviolet rays 100%, as MCR Safety lists it |
| Dielectric | Yes (no metal parts), as MCR Safety lists it |
| TAA (Trade Agreements Act) | Yes, as MCR Safety lists it |
Source: MCR Safety product page https://mcrsafety.com/glasses/lw3, fetched Nov 6 2026; MCR Safety specification sheet LW3. Ratings are as published by the manufacturer or the named standard, not a recommendation for any task.
Features
- UV-AF anti-fog lens coating
- These dielectric glasses contain no metal pieces
- Hybrid temple design
- Lens is sealed with open cell foam
- Lightweight frame (24.5 grams) is comfortable and easy to wear
- Provides increased protection from small particles and debris
- Single lens design with integral side shields for greater orbital seal
- Thermal Plastic Rubber (TPR) temple inserts and nose pads enhance grip and comfort
- Meets ANSI/ISEA Z87.1-2025 standard
Source: MCR Safety feature list for style LW3 on its product page, fetched Nov 6 2026.
MCR Safety LW3 family
| Part number | Lens | MCR Safety coating | VLT | Frame / temple colour | Z87 | CSA Z94.3 | UPC | Case pack | On our site |
|---|---|---|---|---|---|---|---|---|---|
| LW310AF | Clear | UV-AF Anti-Fog | 90% | Clear | Z87+ | Yes | 766868653214 | 144 | this page |
| LW312AF | Gray | UV-AF Anti-Fog | 13% | Smoke | Z87+ | Yes | 766868653252 | 144 | another listing |
Related MCR Safety Law part numbers
| Style | Item | Z87 mark | Lens tints | Sold by |
|---|---|---|---|---|
| LW2 | Law LW2 Safety Glasses, LW212, Gray Lens, Hard Coat, Dielectric | Z87.1+ | Clear, Gray, Shade 2, Light Blue, Shade 3, Shade 5, Silver Mirror, Blue Mirror, Indoor/Outdoor Mirror | |
| OG1 | Law OG1 Safety Glasses, Clear, Gray Lens, Anti-Fog, Over the Glass | Z87.1+ | Clear, Gray | Dozen |
Source: MCR Safety product page for each style (fetched Nov 6 2026: lens colour, coating, VLT and temple colour per part number); MCR Safety price and packaging file, Oct 21 2026 (UPC, case pack). Each style links to its own page.
MCR Safety LW3 questions
What is the difference between ANSI Z87-1 and ANSI Z87+? Z87.1 is the standard; the + is its high-impact level (high-velocity and high-mass impact tests) and plain Z87 the basic level. MCR Safety marks the LW3 Z87.1+ and states it meets ANSI/ISEA Z87.1-2025.
Do anti-fog safety glasses really work? The LW3 lens coating is UV-AF Anti-Fog, as MCR Safety names it.
What certification is required on safety glasses? The LW3 carries Z87.1+; MCR Safety also lists CSA Z94.3. What the marks on safety glasses mean.
What's the difference between mirrored and tinted safety glasses? The LW3 lens tint is Clear; MCR Safety lists visible light transmission Clear 90%. The lower the figure, the darker the lens; the tint descriptions on this page are MCR Safety’s.
How is the LW3 sold? By the dozen (12 pairs of one size). MCR Safety case pack: 144 per case.
Source: Lens tint descriptions and light-transmission bands: MCR Safety, "Eyewear Lens Guide" (lens tints, light transmission and coatings page); VLT figures per part number from the MCR Safety product page.
Guides: Z87 vs Z87+ · lens tints explained · the anti-fog marking · OSHA safety glasses requirements · glasses vs goggles · every pair of safety glasses, goggle and face shield by rating · the marks on safety glasses.
Manufacturer item number: LW3. Spec sheet: MCR Safety specification sheet (PDF).
MCR Safety Law LW3 protective eyewear is a foam-lined, sealed wraparound safety glass with a clear anti-fog Duramass lens, rated ANSI Z87.1+ and CSA Z94.3. The nylon frame and foam seal help block dust and fine debris.
- Lens: clear with anti-fog and Duramass scratch-resistant coating
- Frame: foam-lined, sealed wraparound in clear/translucent nylon
- Temples: straight bayonet style with TPR inserts
- Certifications: ANSI Z87.1+ and CSA Z94.3
- Series: Law LW3
Demolition, insulation and abrasive blasting crews exposed to airborne particles can wear this sealed style where goggles feel too heavy. Manufacturer item number: LW310AF. Sold by the dozen.
Sold by the dozen
One dozen holds 12 pieces. The price shown is for the full dozen; quantity 1 = 1 dozen (12 pieces).
