What We Do / Fabrication

SI Mechanical, LLC moved its fabrication to its new 24,000 SF facility in 2020. Since that time, we have added more automation and more equipment to improve quality and production. The facility was constructed with sheetmetal and piping production in mind. Our facility has the ability to store large amounts of raw materials to maintain high production levels as well as staging for constructed materials while waiting to load and ship. Our ductwork and products are hand-built to the highest standards and we always follow SMACNA standards in our duct construction.

SI Mechanical LLC sells fabrication to the public. We can make small orders in a few days or we can bid your plan and spec projects. SI Mechanical, LLC will package and ship the pieces you want, when you want them. We build sheetmetal specialties and air duct accessories in house.

What We Fabricate

  • Straight Duct, single & double wall TDC, DM, S&D, ETC.
  • Rectangular Fittings, single & double wall TDC, DM, S&D, ETC.
  • Saddle taps, single & double wall Rectangular, round & oval.
  • Buckets for R/A & S/A
  • Slot diffusers or plenum boxes With round or oval inlet
  • Roof Curbs & Thy Curbs Flat roof or with pitch
  • Curb adapters Welded or soldered
  • T – tops Flat roof or pitch - welded or soldered
  • Round Flashings Flat roof or with pitch soldered
  • Spiral Pipe, single & double wall From 4”to 28” diameter. Galvanized & paint grip.
    Lined 6”and up. Unlined anything 4” to 28”.
  • Round Fittings, single & double wall With liner or without liner.
  • Stainless steel duct Rectangular & round.
  • Black Iron Duct Rectangular & round
  • Multiblade Dampers Parallel blade. & Opposed blades.
  • Filter Racks & many more items Different types
  • Custom Drain Pans Fully welded, galvanized or stainless
  • Louvers Galvanized, Aluminum or Stainless
I wanted to acknowledge SI Mechanical for their work on my shop. My experience of your employees is that they are hardworking, professionals that strive to do the best job possible. Rick Bair’s Woodshop