HeatSign HS-CL Series CO2 Galvo Laser Enclosure with Viewing Window

The HeatSign HS-CL Series Enclosure by Clearview Plastics is a heavy-duty safety and ventilation enclosure for HeatSign's HS-CL40L (40W) and 60W CO2 galvo markers. These are industrial marking machines that increasingly land on small-shop benches — sealed RF tube, air cooled, galvo speeds to 7,000 mm/s, and no enclosure of any kind.

At 7,000 mm/s you generate smoke faster than a room can clear it. This enclosure handles both halves of the problem: 1/4" aluminum composite panels and door gasketing for the beam and the light, a viewing window for monitoring, and a 4" exhaust port feeding a hose, a fan, or a Donaldson AD350 filtration unit.

Marking a different machine, or want to compare configurations? See our universal UV / Fiber Galvo enclosure.

Built for the HeatSign HS-CL Series

This enclosure is designed and sized around the following configurations:

• HeatSign HS-CL40L (40W) and HS-CL 60W CO2 galvo markers
• Sealed RF metal tube, air cooled — no chiller to accommodate
• 110 × 110 mm, 140 × 140 mm, and 210 × 210 mm marking fields
• Static table or rotary axis configurations
• Separate control cabinet stays outside — cabling passes through

All four sizes are selectable in the configurator above: Medium 15.75 × 23.75 × 27.5" · Large 18 × 29.5 × 30.5" · XL 21.5 × 29.5 × 34" · XL+ 21.5 × 31 × 38.25" (W × D × H). Not sure? Send us your machine and the media you mark and we'll point you to the right size.

Real containment for a 10.6 µm beam

RF CO2 galvo markers are Class 4 lasers. A 10.6 µm beam behaves nothing like a fiber beam — it is absorbed rather than transmitted by most solid materials, which is exactly why it engraves wood, acrylic, and leather so well. That also means a direct or reflected strike will mark whatever it hits inside your shop.

• 1/4" aluminum composite panels — opaque, rigid, and beam-stopping on all sides.
• Viewing window — so you can monitor the pass without opening the door. Tell us your wavelength when you order and we'll fit the correct window for your machine.
• Door gasketing — seals the door perimeter to keep smoke in and block light leakage around the edges.

Contain the smoke

A galvo CO2 head covers ground fast, and it makes smoke just as fast. Extraction is not optional on this machine.

• 4" exhaust adapter — connects a flexible 4" hose on the rear panel to vent outdoors or to a filter.
• Fan & venting options — add a 95 CFM or 200 CFM fan, or our window exhaust kit, for the extraction your workload needs.
• Donaldson AD350 filter — step up to a heavier-duty Donaldson AD350 filtration unit purpose-built for laser marking when venting outside isn't an option.
• Flow-control vents — slide-open vents on the front and sides tune airflow for better extraction.

Configure your enclosure

Build the enclosure to your shop with the options in the product configurator above:

• Size — Medium, Large, XL, or XL+ (see the size guide above and Specifications below).
• HD hardware upgrade — metal hinges, heavier binding-screw hardware, and metal door pulls.
• LightBurn hood camera — hood-mounted USB camera for accurate part alignment and LightBurn tracing.
• Additional side doors — add side-door access; with two side doors the enclosure doubles as a pass-through for oversized or long media.
• Additional seam sealing — extra sealing for tighter fume and light containment.
• Two-wire magnetic door sensor — a two-wire magnetic door sensor that reports door position to your machine's safety circuit. It senses the door; it does not hold it shut.
• Delivered assembled — have it shipped built and ready to use instead of flat-packed.

Specifications

• Fits: HeatSign HS-CL Series — see the fitment list above
• Panels: 1/4" aluminum composite (white)
• Viewing window: Laser-safety viewing window matched to your machine's wavelength — confirm 10.6 µm CO2 when you order
• Sizes (W × D × H): Medium 15.75 × 23.75 × 27.5" · Large 18 × 29.5 × 30.5" · XL 21.5 × 29.5 × 34" · XL+ 21.5 × 31 × 38.25"
• Recommended for this machine: XL
• Exhaust: 4" adapter (rear); fan, window-kit, or Donaldson AD350 filtration options; slide flow-control vents
• Sealing: door gasketing standard; optional added seam sealing
• Options: HD hardware, LightBurn hood camera, additional side doors (pass-through), two-wire magnetic door sensor, assembled delivery
• Assembly: 60–120 minutes with a Phillips screwdriver and 2.5 mm hex wrench; 3D-printed brackets (STL files included, or add pre-printed parts)
• Made in: Sacramento, California, USA

Why choose the Clearview HeatSign HS-CL Series enclosure

• Genuine beam containment — opaque aluminum composite on every side, not a clear hobby panel.
• Industrial-grade build — 1/4" aluminum composite panels with door gasketing.
• Contains beam, glare, and fumes — with exhaust and Donaldson AD350 filtration options.
• Sized for your machine — a specific size recommendation for the HeatSign HS-CL Series, not a guess.
• Configurable for real shops — side doors / pass-through, door sensor, seam sealing, and assembled delivery.
• US-made by a small business — CNC-cut in Sacramento with genuine, hands-on support.

About Clearview Plastics

Neil Henderson here, owner and head designer at Clearview Plastics. My shop is a California-based artisan design studio, and we build every enclosure in-house in Sacramento. Our panels are professionally CNC-cut for accuracy, with parts designed specifically for each machine we support — this isn't a generic box off a marketplace. When you order through us, you work directly with me, and that relationship comes with my genuine appreciation and skilled, personal help.

Frequently asked questions

Does a CO2 galvo really need an enclosure?
Yes, for two separate reasons. The 10.6 µm beam is a Class 4 hazard that reflects off shiny stock and marks whatever it lands on. And a galvo head moving at thousands of millimetres per second generates smoke far faster than an open bench can clear it. The enclosure handles both.

Does this reclassify my Class 4 laser to Class 1?
No. This enclosure contains the beam, glare, and fumes and dramatically reduces stray-light exposure, but it is not certified to reclassify your laser or to meet ANSI standards. Always wear OD-rated safety glasses for your wavelength and follow Class 4 protocols. If you need a formally certified Class 1 solution, contact us about our Worksafe enclosure.

What are the exhaust and filtration options?
A 4" exhaust adapter is included to vent outside via a flexible hose. Add a 95 CFM or 200 CFM fan or our window exhaust kit, or step up to a heavy-duty Donaldson AD350 laser-rated filtration unit for indoor operation.

Can it act as a pass-through for long or oversized media?
Yes. Add the optional side doors — with two side doors, the enclosure opens on both sides so you can pass long or large stock straight through.

Can I get it assembled?
Yes. Choose the delivered-assembled option and it ships built and ready to use instead of flat-packed. You can also add a two-wire magnetic door sensor and extra seam sealing.

What if my machine doesn't measure the way you've listed it?
Send us your actual base width, depth, and standing height with the column at your normal working focus. We'll confirm the size before you order, and if nothing standard fits, we cut custom.

What is your return policy?
We offer a 30-day return policy. Unused, undamaged panels with the masking fully attached are eligible for a full refund less return shipping. If panels are damaged after shipment or the protective mask has been removed, we can't offer a refund.