🎯 26 Standard Models — Or Yours, Built to Order

The Tunnel comes in 26 factory-standard configurations, but every single one is further customizable. Belt width, belt count, chamber length, infeed/outfeed length, power source, insulation level, heat exchanger — every dimension is configurable. ROQ’s factory motto: “everything customizable except the color.”

🔥 Gas · Electric · or Combined — Your Utility, Your Choice

Run the Tunnel on natural gas, LPG (propane), pure electric, or a combined gas+electric system that switches between the two at the press of a button. If your facility changes — or gas prices spike — you’re already covered. Gas models can deliver over 50% monthly utility savings vs. electric-only dryers in high-volume shops.

📏 Heat Chamber from 10 ft to 30 ft

Scale your dryer to your production rate. A 10-foot chamber handles moderate production; 20-foot is the workhorse for high-volume auto lines; 30-foot delivers continuous cure at serious industrial scale. Infeed/outfeed lengths start at 5 ft and go as long as you need — plenty of catch space or staging room.

🔀 Split-Belt Option — Variable Widths, Independent Control

The 71″ Tunnel can be configured with TWO belts that don’t have to be equal widths. Run a 45″ belt alongside a 25″ belt, each with independent speed and direction controls. Run plastisol on one side, water-based on the other. Match two different presses to a single dryer. No bottleneck, no second dryer required.

🧩 Modular & Expandable Platform

Today you need a 15-ft chamber; three years from now you need 25 ft. The Tunnel’s modular construction means you can add chamber sections, extend the belt, or add GP modules as your shop grows — without replacing the entire dryer. The investment scales with your business.

🌡️ Dual-Zone Chambers & GP Modules

Tunnel models are available with dual-zone chambers (two independently-controlled heat zones on a single dryer — lower temp for gel, higher temp for cure), and optional GP (General Purpose) modules for specialized drying scenarios: coat + cure in one pass, pretreat drying for DTG, or dual-stage curing for hybrid prints.

🔇 Rockwool Insulation + Axial-Flow Fan

High-density rockwool panels keep the Tunnel cool-skinned and quiet. The axial flow fan circulates heated air through the full chamber with adjustable speed and an air-purification filter — providing the forced-air circulation that cures water-based and discharge inks properly, not just the plastisol component.

🔧 Heat Exchanger Option — No Yellowing on Whites

Add the heat-exchanger option (HE / permutation heat) to gas-powered Tunnels to isolate combustion byproducts from the airflow entirely. On white and light-colored fabrics this eliminates the yellowing that plagues direct-fired gas dryers. Essential for shops that print white-on-white, pimas, or light pastels at volume.

Belt Width

• 38″ (1000mm) — compact/mid volume
• 59″ (1500mm) — standard production
• 71″ (1800mm) — max belt · split-belt option
• Other widths available on request.

Heat Chamber Length

• 10 ft — entry-level production, hybrid shops
• 15–20 ft — standard workhorse for auto lines
• 25–30 ft — heavy industrial, contract printing
• Modular — expand later as volume grows.

Power Source

• Natural Gas — lowest operating cost
• Propane (LPG) — shops without NG hookup
• Electric — clean, zero combustion
• Combined Gas + Electric — switchable
• Add HE for heat exchanger (no yellowing).

Belt & Feed Configuration

• Infeed length: 5 ft minimum, as long as needed
• Outfeed length: 5 ft minimum, as long as needed
• Single belt or twin belts (variable widths)
• Belt direction: same or opposite (on twin-belt)

“Can I afford an industrial dryer?”

Most shops look at the up-front cost and stop there. The right way to evaluate: monthly payment on financed equipment vs. current monthly wasted energy on an older gas dryer. Many shops that upgrade to a Tunnel report the monthly payment is substantially offset by utility savings alone — so the dryer effectively pays for itself while adding 5–10+ years of production life. We can walk you through the math with your actual numbers.

“What about installation?”

ROQ Tunnel installation requires qualified gas/electric tradespeople plus a ROQ-trained commissioning tech. We coordinate that for you — we’ll connect you with local trades who’ve worked with industrial conveyor dryers, and we’ll arrange factory commissioning and operator training. Installations typically take 2–4 days onsite depending on configuration and chamber length.

“Will it fit through my door?”

Tunnels ship in modular sections and assemble onsite — even 30-ft chambers with 71″-belt models ship as components that fit through standard commercial roll-up doors. Before ordering, we’ll verify your ceiling height (minimum 9–10 ft depending on configuration), utility hookup locations, and exhaust routing. Send us photos or a floorplan sketch of your space and we’ll do the fit-check before you commit.

“What’s the real lead time?”

Every Tunnel is built-to-order at ROQ’s factory in Portugal. Typical lead time is 8–12 weeks factory-to-door including ocean freight and US customs clearance. If you need equipment sooner, ask about ROQ’s in-stock & ready-to-ship inventory — demo units, used units, and occasionally pre-built Tunnels are available with 2–4 week US delivery.

“Can I service it myself?”

Yes — the Tunnel was designed for straightforward routine service. Filter cleaning, belt tracking, heater/burner inspection, and standard maintenance are all accessible via side panels and can be handled by your own maintenance tech. For anything beyond routine, ROQ maintains a US-based tech support team we can connect you with directly.

“Will my ink manufacturer certify cure on this dryer?”

Yes — Tunnels hit every industry-standard cure profile. The 200°C (392°F) max temperature and precision contact temperature control satisfy specs for every major ink manufacturer (Wilflex, Rutland, International Coatings, Union, Matsui, CCI). For production-critical jobs, we recommend pairing the dryer with an Atkins donut probe to verify actual cure temp on your specific ink/fabric combination.

“How is this different from the ROQ SAHARA?”

Both are ROQ industrial forced-air tunnel dryers built to the same quality standard. The Tunnel is ROQ’s original platform — maximum customization, 26 standard models, everything from belt width to chamber configuration is configurable. The SAHARA is ROQ’s premium updated version with added software features (Standby Mode, recipe-saving touchscreen, programmable start/stop) and increased chamber entry height (140mm). Choose the Tunnel if maximum customization & bespoke configuration matters most; choose the SAHARA if premium energy-saving software is the priority. Call us — we’ll help you pick the right one.