Curated News
By: NewsRamp Editorial Staff
December 16, 2025
Exentec First US Manufacturer Certified Under New FM 4922 Duct Safety Standard
TLDR
- Exentec gains a market edge as the first U.S. manufacturer with FM Approval for large duct systems over 60 inches, offering clients a compliant and high-performance advantage.
- Exentec's Fab-Tech PermaShield duct systems now meet the revised FM 4922 standard, which requires separate Fire Propagation Index ratings for interior and exterior surfaces.
- This certification advances industry safety standards, helping protect facilities and communities by ensuring duct systems exceed rigorous fire safety and performance requirements.
- Exentec achieved a first by securing FM Approval for duct systems exceeding 60 inches, aligning with updated standards that now test interior and exterior surfaces separately.
Impact - Why it Matters
This development matters because it addresses critical safety gaps in industrial ventilation systems that handle hazardous fumes and chemicals. For facility managers, engineers, and safety professionals in semiconductor manufacturing, pharmaceutical production, data centers, and other high-tech industries, the updated FM 4922 standard provides enhanced protection against fire propagation in large duct systems. Exentec's certification means these industries can now implement larger, safer exhaust systems that meet rigorous new testing protocols, potentially preventing catastrophic facility fires and protecting both personnel and valuable equipment. As industrial processes become more complex and facilities expand, this advancement in duct safety standards represents a proactive approach to risk management that could influence insurance requirements, building codes, and safety protocols across multiple sectors.
Summary
Exentec US, Inc., a leading innovator in fume exhaust duct systems, has achieved a significant industry milestone by becoming the first U.S. manufacturer to receive certification under the newly revised FM Approvals 4922 standard for duct systems exceeding 60 inches in diameter. This certification covers Exentec's Fab-Tech PermaShield™ duct systems across unrestricted diameters, sizes, and vertical riser heights, allowing facility owners and engineers to construct larger mains and submains with FM Approved products. The achievement demonstrates Exentec's leadership in safety and engineering excellence, reinforcing its commitment to innovation and market leadership in mission-critical technologies.
The updated FM 4922 standard, developed by the globally recognized certification organization FM Approvals, introduces enhanced fire safety requirements with distinct Fire Propagation Index (FPI) classifications for both exterior and interior surfaces of ductwork. The March 2025 revision specifically targets systems above 60" in diameter with new testing protocols, moving from a unified FPI requirement to separate ratings for interior liners. This evolution reflects growing industry focus on rigorous safety standards and property loss prevention, particularly relevant for single-wall constructions where duct wall materials must meet elevated safety thresholds.
According to Jim Howard, General Manager of the Exhaust and Abatement team at Exentec, "This certification reflects our dedication to engineering excellence and our proactive approach to evolving safety standards." The company's achievement underscores a shared commitment with FM Approvals to advancing duct system reliability and performance. Clients can now benefit from products that exceed the latest safety expectations, backed by proven innovation and trusted compliance. For more information about Exentec's solutions, visit their website at www.exentec.net, where they offer integrated, energy-efficient technologies for high-tech industries including semiconductors, life sciences, energy, and data centers.
Source Statement
This curated news summary relied on content disributed by 24-7 Press Release. Read the original source here, Exentec First US Manufacturer Certified Under New FM 4922 Duct Safety Standard
