Thanks to its excellent products and quality services, UNT Duct is one of the leading rigid pir pre-insulated duct board manufacturers and suppliers in China. Welcome to buy the high quality and customized products from our factory. We will offer you the best service and fast delivery.
Rigid PIR Pre-insulated Duct Board
Our rigid PIR pre-insulated duct board is a factory-integrated sandwich composite panel: rigid closed-cell polyisocyanurate foam core permanently bonded with high-strength embossed aluminum foil on both sides. It combines air duct substrate, thermal insulation, air barrier and vapor barrier in one single board, completely replacing the traditional two-stage GI duct process (sheet metal fabrication + separate on-site rubber plastic insulation wrapping). We supply a full matching system including PVC connecting profiles, aluminum flanges, specialized hand fabrication tools, sealing tapes and hanging brackets, supporting full on-site cutting, scoring, folding and assembly to form complete air duct runs.
Structure: Silver Aluminum/ PIR Foam/ Silver Aluminum
Size: 4000*1200*20mm
Foam Density: 53kg/m3
Aluminum Thickness: 0.06mm or 0.08mm
Packing: 10 sheets/ package
Loading Capacity: 710 sheets/ 40'HQ (packed with plastic bags)
660 sheets/ 40'HQ (packed with cardboard box)
Core On-Site Advantages for Contractors of Rigid PIR Pre-insulated Duct Board
1. Cut Labor Time & Costs – Biggest Profit Boost
One-step on-site fabrication – No welding, no extra insulation or vapor barrier. Installation efficiency up 40%–50%, construction cycles sharply reduced.
Ultra-lightweight – Only ~1/6 the weight of GI duct + rubber insulation. One worker can handle alone; less lifting equipment.
Fewer hangers – Reduces brackets, material costs, and installation workload.
Simple manual processing – Cut, score, bend with dedicated hand tools. No heavy machinery; easy to make elbows, tees, reducers.
Flexible panels – Better bend resistance than phenolic boards, less cracking, minimal rework and waste.
2. Fewer Risks & Callbacks
Factory-integrated foil vapor barrier – No gaps, cold bridging, or air leakage. Leakage far below 5%–10% of traditional ducts. Eliminates cold loss, uneven temp, condensation complaints.
Closed-cell PIR foam (0.36% water absorption) – Resists moisture, mold, bacteria. Smooth aluminum surface, fiber-free – meets cleanroom/hospital/food standards.
BS476 Class 0 fire rating – Self-extinguishing, low smoke, no drips. Passes strict fire inspections easily.
3. Saves Ceiling Space
Only 20mm thick vs. 30.5mm for GI + insulation. Ideal for tight ceiling cavities – boosts your bidding edge.
4. Better Energy Performance, Easier Quotation
0.020 W/m·K thermal conductivity – Best among pre-insulated ducts. Cuts HVAC energy loss 20%–30%. Great for commercial tenders.
20+ years service life – Far outlasts XPS. Less renovation needed – more attractive to developers and end clients.
Main Production Process of Rigid PIR Pre-insulated Duct Board
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