Filamaster FRP Ductwork

  • Fabrication process: hand lay up over mold or contact molded
  • Fabrication of various shapes including round, rectangular, square and custom
  • Customized design options that are configurable to suit users’ needs and product specifications
  • Standard lengths: 20 feet and 38 feet
  • Engineered for vacuum and pressure
  • Fabricated using only premium vinylester resins and C-glass, synthetic veils and E-glass structural reinforcements
  • Fire retardant and UV inhibitor available
  • Class 1 flame spread rating of less than 25 as per ASTM E-84

Corrosion Liners

  • 2 mils: one C-veil and two 1.5oz chop strand mat
  • Nexus liners available for caustic environments


  • Elbows (90 degrees, 45 degrees) smooth radius or mitred
  • Tees
  • Reducers
  • Y Branch
  • Dampers
  • Register boxes
  • Square to rounds
  • Blastgates
  • Access door
  • Stacks
  • Caps
  • Hoods
  • Flanges
  • Drains
  • Couplings

Filamaster FRP ductwork is light weight, easy to transport, install and requires low maintenance.