Viewing windows
Tempered lites for instrument doors and enclosures, cut to tight tolerance.
Viewing windows, doors and panels for laboratory and scientific equipment — tight tolerance, low-iron clarity, and printed graduations or masks fired into the glass.
Tempered lites for instrument doors and enclosures, cut to tight tolerance.
Thicker lites where the panel sees pressure differential or impact.
Ceramic frit graduations, borders and blackout masks fired in permanently.
Hardware holes, standoffs and notches cut before tempering.
| Panel sizes | Small instrument lites through 90" × 144" |
| Thickness | 1/8"–1/2" (3–12 mm) by application |
| Glass types | Low-iron, clear, tinted |
| Edgework | Ground or polished for handled and sealed edges |
| Decoration | Ceramic frit masks, scales, legends |
| Size tolerance | ± 1/32" on cut size; squareness within 1/16" |
| Standards | CPSC 16 CFR 1201, ANSI Z97.1, ASTM C1048 · permanent temper mark |
| Documentation | First article and dimensional confirmation on request |
Need a spec not listed? We quote off your drawing, not off a catalog.
DXF, DWG, PDF or a dimensioned sketch. We check hole placement and edge distances against tempering limits before we price it — so the quote you get is the part you can actually have.
Start a quote →Something not covered? Call the shop — you'll reach someone who has run the oven.
Yes — ceramic frit, fired during tempering, so cleaning agents and repeated wiping won't remove it the way they will with pad printing or film.
± 1/32" on cut size is standard. If your seal needs tighter, tell us before quoting and we'll say honestly whether we can hold it.
Depends on the pressure and the failure mode you need. Send the application data — we'd rather turn down a part than have one fail in the field.
Dimensions, thickness, finish and quantity are enough for a first number. Drawings and photos welcome.