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TR-35 is Arcoplast’s suspended lay-in ceiling panel grid system, built for high demand wet or dry cleanrooms in toxic or sterile environments. Unlike standard metal grid systems, TR-35 rails are manufactured from pultruded fiberglass thermoset polyester resin, with no ongoing maintenance program required.
SUSPENDED CEILING PANEL GRID SYSTEM
TR-35
The Ceiling System Built for Harsh Environments
TR-35 rails are impervious to water and humidity, and unaffected by galvanic action, corrosion, or oxidization. They resist fungus, mold, bacteria, and viruses, and won’t flake, peel, blister, delaminate, or sag over time.
The system is modular, built from clamps, rails, and clips, and requires no specialized tools to install. It assembles in a variety of formats and can be fitted with air tight, water tight gaskets. TR-35 supports Acryloyl square edge or tegular edge panels, as well as the insulated i-Panel.
Types of GFRP
Key features
- Accepted by USDA
- Average maximum load of 89lbf. | 40.37 KGB
- Class A Building Codes USA | International Building Code IBC
- Class A (1) Flame Spread
- Flame Spread Rating – 19
- Designed for cleanrooms up to, but not including BSL-3
Seismic tests
- ICC approved for use in all seismic zones (ESR-1722)
- Seismic Categories A, B, C, D, E, F
i-Panel GFRP Closed Edge Insulated Ceiling Panel: The i-Panel features a high density, rigid glass fiber insulation core, encapsulated in a saturated chopped strand fiber mat shell with closed edges to prevent shedding. The face is finished with the Arcoplast GelCoat surface, and the panel offers an R value between 2.3 and 8.3.
Hanger Wires: TR-35 grids are supported by three types of hanger wire: galvanized for non-corrosive environments, stainless steel for non-magnetic settings like MRI rooms, and Monel for halide-heavy environments where stainless steel isn’t suitable.
TR35 Cross Junction: Overlock and interlock clamps join a cross rail to a main rail, with a location notch on the main rail keeping the rails and clamps positioned correctly in the grid. Panel clips aren’t part of this junction assembly. Instead, they secure the ceiling panels into the grid, strengthening the air and water tight seal and preventing panel flutter.
TR35 Panel Bay A panel bay is the area created by the grid that houses an MEP device or lay-in ceiling panel.
TR35 Offset Junction: The offset junction combines an offset clamp and an overlock clamp, fixed anywhere along the rail with lock rivets to create custom bay sizes. Offset clamps come standard or modified, cut at an angle to fit around an MEP device or panel.
TR35 Crossrail Perfect Step: Only the cross rail has a perfect step, allowing it to align flush with any intersecting main, cross, or wall rail.
The TR-35 grid combines three rail types, multiple clamp styles, clamp junctions, panel clips, and lock rivets to support lay-in i-Panel ceiling panels.
Installation
The TR-35 system is built from three rail types, five clamp types, and panel clips that lock together to form bays for lay-in ceiling panels or MEPs. While the grid can house standard ceiling panels, only Acryloyl and i-Panel lay-in panels are designed for toxic environments.
TR-35’s rail and clamp assemblies are thicker than a conventional metal grid, requiring a small center-to-center adjustment, an extra 1/16 inch (1.5875 mm) per linear foot, when designing or installing the grid.
- Four seal types secure panels into the grid: Aqua Fin gasket, Bubble Seal gasket, Foam gasket, and TR-35 caulking
- Different rail configurations support seismic categories A through F
- TR-35 integrates with Arcoform and all Arcoplast wall and ceiling systems, except GFRP Lead panels
- A-1010 Bio-Seal finishes any penetration into the grid
In the event of damage, replacing components is typically most cost effective, though panels can be repaired if needed. Arcoplast is not a domestic product, and all installations must be carried out by trained, experienced tradespeople.
TR35 Main Rail
Cross Rail
Wall Rail
Built for the Harshest Conditions
The TR-35 suspended ceiling, fitted with Arcoplast panels, is a high endurance, waterproof, air tight system built for humid, high saline, corrosive, sterile, or toxic conditions. It withstands rigorous cleaning and decontamination procedures, offering a long service life with no rejuvenating maintenance required.
Grid Comparison
| Grid Type | Imperial | Metric |
|---|---|---|
| TR-35 Grid | 24⅛ x 24⅛ inch | 612 x 612 mm |
| Metal Grid | 24 x 24 inch | 609.6 x 609.6 mm |
| TR-35 Offset Factor | ⅛ inch | 2.4 mm |
| TR-35 Incremental Adjustment (per linear foot) | Extra 1/16 inch | Extra 1.5875 mm per 304.8mm |
Panel Dimensions
| Panel Type | Thickness | Notes |
|---|---|---|
| Acryloyl Square Edge | 0.250 and 0.375 inch (6.3 and 9.5 mm) | N/A |
| Acryloyl Tegular Edge | 0.375 inch (9.5 mm) only | N/A |
| i-Panel | 0.625 to 2.215 inch (15.9 to 53.9 mm) | R value range: R 2.368 to R 8.344 |
| Nominal Panel Sizes | 2x1ft, 2x2ft, 2x3ft, 2x4ft, 4x4ft | Custom panels made to order |
Acryloyl Square-Edge Lay-In Ceiling Panels
The Acryloyl Square Edge and Tegular Panels have the same physical, mechanical properties.
- All Acryloyl panels are chemically neutral
- Barcol indentation hardness test: ASTM D 2583 Result 59
- Compliant: Canada Agriculture. USDA. FDA. NIH. CDC. NIAID. NSF.
- 6.3mm Fire & Smoke: ASTM E84 Class-A
- 9.5mm Fire & Smoke: ASTM E84 Class-A
- Living Building Challenge 3.1-Declare label compliant living building award
- Seismic compliant Cat: A, B, C, D, E, F
Acryloyl Square Edge: Ceiling Panel Weight for 10,000 Square Feet / 930.23 Sq Meters
| Thickness (Imperial) | 1 Sq Foot | 10,000 Sq Feet | Thickness (Metric) | 1 Sq M | 930.23 Sq M |
|---|---|---|---|---|---|
| 0.250 inch | 2.0 Lbs | 20,000 Lbs | 6.3 mm | 9.70 Kg | 9,023 Kg |
| 0.375 inch | 3.5 Lbs | 35,000 Lbs | 9.5 mm | 17.09 Kg | 15,898 Kg |
Engineered to Support Specialized Fixtures
For added structural support, four metal plate mounted swivels attach directly to the Acryloyl square edge lay-in ceiling panel using A-2020 adhesive, with each swivel connected to the roof by a hanger wire tied to a single post. A center support bracket, secured with four screws, holds the fixture in place. Testing confirmed the A-2020 adhesive bond between the panel and swivel brackets holds a pull strength of 1,439 lbs per swivel.
Acryloyl Tegular Lay-In Ceiling Panels
The tegular edge allows the panel to seat flush to the face of the grid.
- All Acryloyl panels are chemically neutral
- Living Building Challenge 3.1 Declare label compliant
- Barcol indentation hardness tested per ASTM D 2583, result of 59
- Compliant with Canada Agriculture, USDA, FDA, NIH, CDC, NIAID, and NSF standards
- Rated Class A for fire and smoke per ASTM E84
- Seismic compliant for categories A and B
Acryloyl Tegular: Ceiling Panel Weight for 10,000 Square Feet / 930.23 Sq Meters
| Thickness (Imperial) | 1 Sq Foot | 10,000 Sq Feet | Thickness (Metric) | 1 Sq M | 930.23 Sq M |
|---|---|---|---|---|---|
| 0.375 inch | 3.0 Lbs | 30,000 Lbs | 9.5 mm | 14.60 Kg | 13,581 Kg |
Built to Last, No Maintenance Required
Acryloyl panels are chemically neutral and highly robust, suited to both wet and dry environments and unaffected by high saline, galvanic action, or humid conditions. Acryloyl tegular and square edge panels offer a long service life with no rejuvenating maintenance required, meaning no ongoing schedule of surface repairs like sanding and repainting flaking surfaces, fixing blistering, or replacing panels due to delamination or micro cracking.
i-Panel: Insulated Lay-In Ceiling Panel
i-Panels fit into the TR-35 suspended ceiling grid or a conventional suspended metal grid.
- Rated Class A per ASTM E84, with a flame spread index of 0 to 25
- Compliant with ASTM C612 for mineral fiber block board thermal insulation, Types IA and IB
- Free of fire retardant decabrominated diphenyl ether (decaBDE)
- Finished with a fire rated GelCoat, pigmented polyester resin surface
- Smoke development index of 0 to 450
- Seismic compliant for categories A, B, C, D, E, and F
i-Panel: Lay-In Ceiling Panel Weight for 10,000 Square Feet / 930.23 Sq Meters
| Thickness (Imperial) | 1 Sq Foot | 10,000 Sq Feet | Thickness (Metric) | 1 Sq M | 930.23 Sq M |
|---|---|---|---|---|---|
| 0.625 inch | 1.15 Lbs | 11,500 Lbs | 15.9 mm | 5.61 Kg | 5,216 Kg |
| 1.125 inch | 1.25 Lbs | 12,500 Lbs | 28.6 mm | 6.09 Kg | 5,670 Kg |
| 1.625 inch | 1.35 Lbs | 13,500 Lbs | 41.3 mm | 6.58 Kg | 6,123 Kg |
| 2.125 inch | 1.45 Lbs | 14,500 Lbs | 53.9 mm | 7.07 Kg | 6,577 Kg |
Insulation That Stays Protected
The i-Panel features a high density, rigid glass fiber insulation core, encapsulated by a saturated chopped strand fiber mat shell. Its impermeable, high gloss GelCoat surface, together with the shell, protects the inner core from moisture, vermin, dust, and contaminants. The closed edge design prevents the panel from shedding fibers, collapsing, or decompressing over time. i-Panels are available in most PMS colors, with Pristine White as the standard.
TR-35 gasket seals are factory fitted, while TR-35 caulking is applied on site. Panel clips secure panels into the grid, preventing flutter and reinforcing the seal from the Aqua Fin, Bubble Seal, or Foam gasket, with Aqua Fin and Bubble Seal offering full air and water tight protection.
There are three ways to access the interstitial space:
- Secured, via panel latches with a gasket-sealed grid
- Unsecured, via panel latches with no gasket or caulking
- Secured, through an access hatch sealed with TR-35 caulking
TR-35 caulking offers the strongest seal and can be cut, removed, and resealed as needed. Access is typically through hatches, though panel latches are used in some cases.
TR35: Aqua Fin Gasket Seal, Light to Medium Duty
The Aqua Fin compression seal begins at 7/16 inch (11.1 mm), with a maximum compression of 5/16 inch (7.9 mm).
- Tested to ASTM E-283-04, allowing no more than 0.3 cfm per square foot at 1.57 sf
- Infiltration tested per ASTM E-283-04, tests S44, S77, and S88
- Meets FAR 25.853 airworthiness standards for interiors
- Compliant with Canada Agriculture, USDA, FDA, NIH, CDC, NIAID, and NSF standards
- Chemically neutral
- GREENGUARD Gold certified
- Fire rated UL10C, positive pressure, self-extinguishing
- Smoke tested per UBC 7-2 and UL1784-01, meeting NFPA 105 requirements
- Effective temperature range of -58°F to +450°F (-60°C to +230°C)
Aqua Fin: Gasket Weight for 10,000 Square Feet / 930.23 Sq Meters
| Grid (Imperial) | 1 Sq Foot | 10,000 Sq Feet | Grid (Metric) | 1 Sq M | 930.23 Sq M |
|---|---|---|---|---|---|
| 2x2 feet | 0.0848 Lbs/sq ft | 847.76 Lbs | 600 x 600 mm | 0.4134 Kg/sqm | 384.53 Kg |
| 2x3 feet | 0.0801 Lbs/sq ft | 801.25 Lbs | 600 x 900 mm | 0.3907 Kg/sqm | 363.44 Kg |
| 2x4 feet | 0.073 Lbs/sq ft | 734.08 Lbs | 600 x 1200 mm | 0.3579 Kg/sqm | 332.97 Kg |
| 4x4 feet | 0.0574 Lbs/sq ft | 573.76 Lbs | 1200 x 1200 mm | 0.2798 Kg/sqm | 260.25 Kg |
TR-35: Bubble Seal, Medium to Heavy Duty
The Aqua Fin compression seal begins at 7/16 inch (11.1 mm), with a maximum compression of 5/16 inch (7.9 mm).
- Tested to ASTM E-283-04, allowing no more than 0.3 cfm per square foot at 1.57 sf
- Infiltration tested per ASTM E-283-04, tests S44, S77, and S88
- Meets FAR 25.853 airworthiness standards for interiors
- Compliant with Canada Agriculture, USDA, FDA, NIH, CDC, NIAID, and NSF standards
- Chemically neutral
- GREENGUARD Gold certified
- Fire rated UL10C, positive pressure, self-extinguishing
- Smoke tested per UBC 7-2 and UL1784-01, meeting NFPA 105 requirements
- Effective temperature range of -58°F to +450°F (-60°C to +230°C)
Bubble Seal: Gasket Weight for 10,000 Square Feet / 930.23 Sq Meters
| Grid (Imperial) | 1 Sq Foot | 10,000 Sq Feet | Grid (Metric) | 1 Sq M | 930.23 Sq M |
|---|---|---|---|---|---|
| 2x2 feet | 0.1692 Lbs/sq ft | 1,691.52 Lbs | 600 x 600 mm | 0.8248 Kg/sqm | 767.26 Kg |
| 2x3 feet | 0.1603 Lbs/sq ft | 1,602.50 Lbs | 600 x 900 mm | 0.781 Kg/sqm | 726.50 Kg |
| 2x4 feet | 0.1468 Lbs/sq ft | 1,468.16 Lbs | 600 x 1200 mm | 0.7159 Kg/sqm | 665.94 Kg |
| 4x4 feet | 0.1096 Lbs/sq ft | 1,095.62 Lbs | 1200 x 1200 mm | 0.5342 Kg/sqm | 496.96 Kg |
TR-35: Caulking Seal, Light to Heavy Duty
Offers excellent adhesion to non-porous surfaces and remains permanently flexible, without shrinking, cracking, crumbling, or drying out over time.
- Tested to ASTM E-283-04, allowing no more than 0.3 cfm per square foot at 1.57 sf
- Chemically neutral
- Contains a food grade fungicide
- Energy efficient
- Compliant with FDA No. 21 CFR 177.2600
- Effective temperature range of -58°F to 350°F (-17.77°C to 177°C)
TR-35: Caulking Weight for 10,000 Square Feet / 930.23 Sq Meters
| Grid (Imperial) | 1 Sq Foot | 10,000 Sq Feet | Grid (Metric) | 1 Sq M | 930.23 Sq M |
|---|---|---|---|---|---|
| 2x2 feet | 0.0234 Lbs/sq ft | 234 Lbs | 600 x 600 mm | 0.1141 Kg/sqm | 106.14 Kg |
| 2x3 feet | 0.0203 Lbs/sq ft | 203 Lbs | 600 x 900 mm | 0.099 Kg/sqm | 92.07 Kg |
| 2x4 feet | 0.0184 Lbs/sq ft | 184 Lbs | 600 x 1200 mm | 0.0897 Kg/sqm | 83.46 Kg |
| 4x4 feet | 0.0129 Lbs/sq ft | 129.33 Lbs | 1200 x 1200 mm | 0.0629 Kg/sqm | 58.51 Kg |
TR-35: Foam Gasket, Light Duty
- Excellent conformity to panel surfaces, with strong cushioning and shock absorption
- Displacement per ASTM E 283, with panel clips: 9.01 mm at 200 Pa, 12.69 mm at 500 Pa
- Meets FDA standards for incidental food contact, including FDA No. 21 CFR 177.2600
- Excellent sound and thermal insulation, tested per ASTM E90 for sound attenuation
- Tested to UL 1784, meeting NFPA 105-2013 smoke leakage requirements (max 3.0 cfm per sq ft at 0.10 inch water column)
TR-35: Foam Gasket Weight for 10,000 Square Feet / 930.23 Sq Meters
| Grid (Imperial) | 1 Sq Foot | 10,000 Sq Feet | Grid (Metric) | 1 Sq M | 930.23 Sq M |
|---|---|---|---|---|---|
| 2x2 feet | 0.129 Lbs/sq ft | 129.11 Lbs | 600 x 600 mm | 0.0630 Kg/sqm | 58.56 Kg |
| 2x3 feet | 0.122 Lbs/sq ft | 122.08 Lbs | 600 x 900 mm | 0.059 Kg/sqm | 55.37 Kg |
| 2x4 feet | 0.0112 Lbs/sq ft | 112.06 Lbs | 600 x 1200 mm | 0.0546 Kg/sqm | 50.82 Kg |
| 4x4 feet | 0.0078 Lbs/sq ft | 78.45 Lbs | 1200 x 1200 mm | 0.0382 Kg/sqm | 35.58 Kg |
Applications
For facilities enclosing a large, expansive roof, a suspended ceiling is the practical solution. TR-35 is built for environments that demand high sanitation, regulated temperature, controlled humidity, and protection against dust, bacteria, and other micro-contaminants.
Large spaces aren’t the only ones facing this challenge. TR-35 suspended ceilings are used across biosecurity and biosafety labs, mobile labs, pharmaceutical facilities, vivariums, and food and beverage production, industries that depend on a controlled, hygienic environment around the clock.
The system’s versatility, robust construction, and long service life, with no rejuvenating maintenance required, translate to minimal downtime and a strong return on investment. Those factors have made TR-35 a preferred suspended ceiling system for scientific and industrial cleanrooms and temperature controlled environments.
Additional information
Lay-In Ceiling Panels
- Acryloyl square edge and tegular lay-in ceiling panels are built from the same impermeable, fully submersible, isotropic solid core composite.
- The i-Panel features a high density, rigid glass fiber insulation core, encapsulated by a saturated chopped strand fiber mat shell, with an impermeable, high gloss GelCoat surface. It’s the lightest and only insulated lay-in ceiling panel in the Arcoplast range, offering strong insulation while staying light enough to fit a conventional suspended metal grid.
Manufacture
- TR-35 rails are manufactured from pultruded fiberglass thermoset polyester resin, pound for pound as strong as or stronger than steel.
- TR-35 clamps and clips are manufactured from extruded, grade 1, type 2 virgin PVC, rated UL 94V-0, the highest, most flame retardant UL94 rating.
Cleaning Decon Sanitation
- Chlorine dioxide
- Formaldehyde gas
- Hydrogen vapor peroxide
- Medium pressure hose wash down
- Mop wash down
- Squeegee wipe down
*The TR-35 cleaning regime depends on several factors, including the type of seal or caulking used and the specific lay-in ceiling panel installed. Contact us for more information.
Compliance
- Compliant with USA Code A
- Compliant with the International Building Code (IBC)
- Compliant for incidental food contact, Canada Agriculture
- Compliant for incidental food contact, USDA registered establishment
- TR-35 can be configured for seismic categories A, B, C, D, E, and F
*Every jurisdiction has its own compliance rules. Confirm local rules and regulations with the relevant authorities before installing the TR-35 grid.
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