Offering a full product line of polycarbonate, glass, and dielectric coated glasses that protect the eyes from class 3R, 3B, and Class 4 laser systems. All Laser Safety Industries' eyewear meets or exceeds ANSI Standards for the appropriate laser safety systems. 
The dielectric coatings are not durable enough for standard use in research labs.
I have 8 pairs of these glasses, all of which were replaced under warrant once for degraded coatings. One year later, all replacement glasses have the same issue.
I have contacted customer support multiple times with no solution found.
It's a real shame, the original coatings they had on pairs made pre-2020 are still good.
Laser Safety Window – 407 Acrylic Sheet | OD 5+ @ 190–375 & 10,000–11,000 nm
received quick and was very happy with the product
The ship internationally to Mexico.
I put the exact dimensions for a Laser Safety Window Covering in the same order as the website has them, width first and then height. I received the "Warning" notices stitched on sideways. I recommend stitching on sleeves with an opening so that the customer can correct the "Warning" orientation if they are made incorrectly/sideways. Overall though, the dimensions fit perfectly and the magnets are strong enough to hold them up.
Thank you for your feedback — and we’re sorry to hear the warning label arrived oriented incorrectly. We understand how frustrating that can be, especially when you followed the width x height format as listed on our site.
While most of our laser window coverings are larger (making orientation more apparent), we recognize that in more compact configurations, it can be less intuitive. For any future orders, you're always welcome to submit a photo or drawing if you’d like the warning label placed in a specific position — we’re happy to accommodate.
We want to make this right. Our team is reaching out to you privately and would be happy to send a corrected version so it’s to your satisfaction.
We do appreciate your note that the fit was perfect and that the magnetic mounting is working well — and we truly value your feedback as it helps us continue to improve.
— Laser Safety Industries Team