Square Panel System USA is the U.S. sales office and partner of Square Panel System Co., Ltd. (Bangkok, Thailand) — founded 2000, a member of Square Group — bringing their modular wall, ceiling, and airflow systems to GMP pharmaceutical manufacturers in the United States.
Wall, ceiling, and airflow components built as a coordinated system — not assembled from mismatched parts.
PPGI-clad panels, 42–100mm thick, with a profiled slip joint, flush surface, and single-piece corner coving. Concealed electrical wiring keeps the interior gap-free.
Polyurethane foam core rated to DIN 4102-1 B3, >92% closed cell content, >1.3 kg/cm² compressive strength, and <1.0% dimensional change.
Concealed suspension (beam-mounted or sit-on-beam) with a flush interior surface, sized to accept lighting, HEPA filters, and site cutouts.
An insulated return air riser is built into the panel run itself — galvanized duct in a PU-foam-insulated cavity — so ductwork never breaks the flush interior.
Flush hinged or sliding doors with automatic drop seal and SS hardware. Windows are single- or double-glazed with nitrogen fill to prevent condensation.
Wall, ceiling, doors, and windows are shop-fabricated and placed simultaneously on site, with layout that can flex as future process needs change.
Core construction and finish data for the modular clean room panel system.
| Application | Wall & ceiling panel |
| Available thickness | 42 / 50 / 75 / 100 mm |
| Thermal conductivity | 0.0176 Kcal/m·hr·°C |
| Surface material | PPGI 0.5mm, 70µ PE film |
| Paint color | Standard off-white (RAL 9002) |
| Panel joint | Tongue & groove, profiled slip joint |
| Standard size | 855 / 1160mm W · 8000mm max L |
| Fire standard | DIN 4102-1 B3, self-extinguishing |
| Closed cell content | > 92% |
| Compressive strength | > 1.3 kg/cm² |
| Dimensional stability | < 1.0% volume change |
| Density | 40 ± 2 kg/m³ |
| Door — single / double | 900 / 1800mm W × 2100mm H |
| Compliance standard | ISO 9001-2008 · GMP guideline |
A single team carries the project from design through commissioning support.
Cleanroom classification requirements, process flow, and personnel/material paths are mapped before a single panel is specified.
Panels, framing, and door systems are shop-built to the project's exact dimensions and finish requirements.
Field crews assemble the modular system on-site with minimal disruption to adjacent operations.
Support during airflow balancing, pressure testing, and documentation ahead of facility validation.
Pharmaceutical manufacturing leaves no margin for panel systems that don't perform.
Layouts developed with current good manufacturing practice principles in mind, from gowning flow to material airlocks.
Shop fabrication runs in parallel with site prep, compressing the path from kickoff to occupancy.
Panel seams, coving, and airflow are specified to the target ISO class — not a one-size-fits-all kit.
Materials, finishes, and assemblies are tracked and documented to support your facility's validation package.
Representative panel configurations across suite types.
The same PUF panel platform, engineered for refrigerated storage, food processing, and blast freezing.
Available in 50 / 75 / 100 / 125 / 150mm thickness, PPGI-clad with a PUF core, tongue-and-groove joint secured by CAMLOCK for a gap-free, condensation-free seam.
150mm panels support cold storage down to below −30°C; door heaters prevent condensation and ice buildup on negative-temperature doors.
Heavy-duty doors with an internal safety release so no one can be locked in, plus an outside cam-lock latch. PVC strip curtains available for high-traffic openings.
PVC corner coving and food-grade interior finishes to USDA standard, for direct use in food processing and storage environments.
| Property | Polyurethane (PUF) | Polystyrene |
| Thermal conductivity | 0.015 W/m·°C | 0.029 W/m·°C |
| Heat transfer (50mm) | 0.352 Kcal/m²·hr·°C | 0.674 Kcal/m²·hr·°C |
| Max working temp | 120°C | 80°C |
| Flammability | Self-extinguishable | Flammable |
At equal insulating performance, a polystyrene panel must run roughly twice the thickness of the polyurethane panel above.
A PIR-core panel line for warehouse, roof, cleanroom, cold room, and prefab building envelopes requiring the highest fire classification.
Ring-structure chemistry gives PIR superior heat and fire resistance versus standard PUF — self-extinguishing with very low smoke release, at 0.023 W/m·K thermal conductivity.
Extra-wide overlap joint for fast interior installation in cleanrooms and cold storage — 42–200mm thickness, 800/1000/1100mm width.
Concealed-screw exterior system for high-rise warehouse walls — screws hidden beneath the panel for a seamless, leak-proof façade, 50/75/100mm thickness.
| Overall / core density | 42 / 40 kg/m³ |
| Compressive strength | 1.4 (perp.) / 3.18 (par.) kgf/cm² |
| Thermal conductivity | 0.023 W/m·K |
| Dimensional stability | ±3% @ −30°C to 70°C/95%RH |
| Fire behavior (DIN 4102-1) | B2, <15cm |
| Thickness | U (W/m²·K) | Suggested Temp |
| 50mm | 0.46 | 0°C ≤ Temp |
| 75mm | 0.31 | −10 to 0°C |
| 100mm | 0.23 | −20 to −10°C |
| 150mm | 0.15 | −40 to −30°C |
| 200mm | 0.12 | −50 to −40°C |
Founded in 2000 as a member of Square Group, our manufacturing partner supplies prefabricated OR systems built to the standards hospital design teams work from.
2.5 Pa positive pressure, 4 ACH fresh air, 20 ACH air circulation, 30–60% RH, 20–25°C, three-stage filtration (pre / medium / HEPA) with a laminar flow pattern.
One-way clean-to-dirty airflow pattern, minimum 37m² room size, smooth anti-germ finishes, and minimized joint lines per AIA hospital design guidelines.
2 oxygen, 2 nitrogen, 1 air, 2 vacuum, and 1 scavenging connection (min. 2 locations each), plus zone valve and area alarm integration.
Foot, palm, or motion-sensor operation with obstruction safety stop. 2000×2500mm max clear opening, <100W consumption, adjustable 200–500mm/sec.
Manufacturing quality is certified through our global manufacturing partner.
Quality management system certification held by our manufacturing partner, audited by Bureau Veritas under UKAS accreditation.
Approval ID PR464932 · Granted 31 Jul 2025
Class 1 fire rating for building panels, exterior wall systems, and interior wall/ceiling materials used in cleanroom applications.
Signed: Phillip J. Smith, VP Materials
Certificate on file, issued by FM Approvals (Norwood, MA) to Square Panel System Co., Ltd. — verifiable at approvalguide.com.
Report 7191288433-MEC22/03-CK_CR1
Reaction-to-fire classification B-s1, d0 — difficult to ignite, no/hardly any smoke, no flaming droplets.
Report XMIN2502000156PL01_EN
Flame Spread Index 15, Smoke-Developed Index 90 — meets Class A interior wall & ceiling finish standard.
| Standard | Tested by | Result |
| BS EN 13823:2020 (SBI) | TÜV SÜD PSB | Reaction-to-fire, non-flooring products |
| BS EN ISO 11925-2:2020 | TÜV SÜD PSB | Single-flame ignitability |
| BS EN 45545-2:2020 | TÜV SÜD PSB | Toxic Gas Index CITg 0.05 (240s) / 0.01 (480s) — below 0.75 limit |
| ASTM E283 | SGS | Air leakage 0.07 m³/hr/m² @ 75 Pa |
| ASTM E331 | SGS | No water leakage @ 137 Pa, 15 min |
| ASTM E330 | SGS | No damage at 2.0× design wind pressure (±2,000 Pa) |
Straight answers to common spec questions, each one sourced to the document it came from.
Tell us your classification target, timeline, and facility footprint. Square Panel System USA is the U.S. sales office and partner of Square Panel System Co., Ltd., Thailand.