Our Flagship Product - ATS 4910 CR

ATS 4910CR™ Duct offers a unique, patented, approved combination of flame, smoke, and corrosion resistance characteristics. ATS 4910CR™ Duct is a dual-laminate system. The corrosion resistant interior liner consists of a synthetic veil and glass reinforcement, saturated with a vinyl ester resin. The vinyl ester resin provides a highly chemical resistant barrier. Combined with this corrosion resistant interior is a fire resistant exterior. The exterior is fabricated with proprietary fire resistant phenolic resin.

ATS 4910CR™ Duct was specifically designed to exhaust robotic wet benches, gas cabinets, tanks, photo resist, dry etchers and other processes common in semiconductor fabrication facilities. Available in standard brown or optional white or gray colors. (Other colors available on request.) ATS 4910CR™ is easily assembled using our ATS H-Collar™ joining system (patent applied for) and our patented ATS Internal Beaded Slip Collar™ system.

The ATS H-Collar™ saves time—there are no external wraps to do at all! The ATS H-Collar™ and ATS Internal Beaded Slip Collar™ maintain the integrity of the ATS 4910CR™ duct’s corrosion resistance by providing a continuous corrosion barrier on the inside of the duct.

Factory Mutual Research

FM#4922 approved for installation without sprinklers: ATS 4910CR™ Duct is listed for use on non-flammable corrosive vapor exhaust systems (exhausting up to one square foot of flammable liquid exposure per inlet) without the necessity for internal fire sprinklers by Factory Mutual Research, File # J. OR6A1. AC, based on FM #4922 tests.

FM#4922 approved for smoke removal without the necessity for a separate smoke removal duct system: ATS 4910CR™ Duct is specifically listed by Factory Mutual (after non-collapse, non-close off fire tests) for smoke removal from cleanroom areas when properly designed and sized without the necessity for fire protection sprinkler systems or dampers installed within the duct. FM #4910 approved: ATS 4910CR™ Duct is specifically listed by Factory Mutual for use in Cleanrooms.

2000 Uniform Fire Code Group H-6 Occupancies

ATS 4910CR™ Duct complies with paragraph 5101.11.5.3 Exception #1

2001 California Fire Code

ATS 4910CR™ Duct complies with paragraph 5101.11.5.3 Exception #1.

California State Fire Marshal Listing Service

ATS 4910CR™ Duct listing number 8534-1592:100. Listed as Fume Exhaust Ducts or Fume and Smoke Exhaust Ducts, for clean room applications and general purpose use in exhausting air, noncombustible fumes and smoke without the need for interrupters or automatic sprinkler protection.

NFPA 318 - Protection of Clean rooms

ATS 4910CR™ Duct complies with paragraphs 2-1.2.5 Exception #1, 3-3.6 Exception #1, 3-3.7, and 3-5.5 Exception #3.