← All Rowmark Engraving Materials
The graphic lives
under the surface.
LaserMax® Reverse Light Blockers put the image where it can't be scratched off: engrave from the back, back-fill with any acrylic paint, and the graphic sits protected beneath a smooth top surface that wipes clean. The light-blocking layer keeps colors dense with no glow-through — built for control panels, interior and exterior signs, and ADA work.
Full Sheets. Cut to Size. Or Finished Pieces.
Buy Reverse Light Blockers the way that fits your operation — most distributors only do the first one.
Colors
Matte face over the color listed. Brushed metal finishes shown from the Rowmark chart.
Gloss face available on request. Swatch images: Rowmark color chart.
Technical Specifications
| Material | Microsurfaced impact acrylic for reverse engraving, light-blocking |
|---|---|
| Sheet size | 24-1/8″ × 48-3/4″ (613 × 1238 mm) |
| Thickness | 1/16″, 2-ply |
| Finish | Matte non-glare (gloss on request) |
| Engraving depth | .003″ (0.08 mm), reverse |
| Fabrication | Laser engraving, rotary engraving, reverse engraving, back-fill |
| Rated for | Interior and exterior signs, control panels, ADA |
Common Applications
Common Questions
How does reverse engraving work?
We engrave the artwork mirrored into the back of the sheet, then fill the engraving with acrylic paint. Viewed from the front, the graphic sits under the smooth face — protected from wear, cleaning chemicals, and picking fingers.
Why does the light-blocking layer matter?
Without it, back-lighting or strong ambient light glows through the fill and washes out the graphic. The blocker layer keeps colors dense from every angle — that's the difference between this and ordinary reverse-engravable sheet.
Can you match our exact brand color?
Yes — that's the point of back-filling. Any acrylic paint works, so we can match a PMS or paint-chip color rather than settling for the nearest stock foil.
Is this the right material for control panels?
It's the one we recommend first. Solvents, degreasers, and scrubbing hit the smooth face, not the graphic. Pair it with our laser cutting for switch and gauge cutouts.
Do you do the back-fill in-house?
Yes — engraving, fill, and finishing all happen in our Sparks shop, so one quote covers the whole part.
Specifications
| Substrate | Micro-surfaced impact modified acrylic |
|---|---|
| Finish | Matte |
| Sheet size | 24″ × 48¾″ |
| Thickness | 1/16″ — 2-ply |
| Engraving method | Reverse laser or rotating carbide |
| Rowmark lists it for | Interior and exterior signage · legend plates |
| Colorfast warranty | 2+ years exterior, mounted vertically |
Physical properties
| Property | Value | Test method |
|---|---|---|
| Izod impact, notched @ 73°F | 1.10 ft·lbs/in | ASTM D-256 |
| Tensile strength, to break | 5,500 psi | ASTM D-638 |
| Elongation before break | 50% | ASTM D-638 |
| Flexural strength | 10,300 psi | ASTM D-790 |
| Electrical arc resistance | 1012 Ω/m² | ASTM D-495 |
| Rockwell hardness | M45 | ASTM D-785 |
| Specific gravity | 1.15 | ASTM D-792 |
| Deflection temperature @ 264 psi | 180°F | ASTM D-648 |
| Coefficient of thermal expansion | 0.000056 in/in/°F | ASTM D-696 |
| Vicat softening point | 208°F | ASTM D-1525 |
Transcribed from Rowmark’s published material information sheet, linked below. Values are reproduced as printed. One note if you are checking our work: Rowmark print the deflection temperature with a Fahrenheit and Celsius pair that do not agree with each other across their line, so we publish the Fahrenheit figure exactly as each sheet states it rather than converting.
Manufacturer Documentation
Current data sheets and safety data sheets, hosted by Rowmark. We link rather than host copies so you always get the live document — which is the only correct way to hand out an SDS.
Need a certificate of compliance, a specific lot, or something not listed here? Call (775) 358-8211 and we will chase it down with our rep.
The material is already here. The clock starts when you order.
Made-to-order work does not go out in an hour, and we are not going to tell you it does. Here is what you actually get.