galvanized-duct-pipe-fencingCreated with Sketch.

Transition Starting Collar

  • Attached to a rectangular hole cut into
    the side of the plenum.
  • Provides a transition reduction in the size
    of trunk duct being used.
Transition Starting Collar

Product Documents


Item No.Description
GV01978" x 20" - 15" x 15" TA Starting Collar 28ga
GV226810" x 22" - 15" x 22" Starting Collar 28ga

45 Years of Quality

We design, manufacturer, assemble, and distribute over 7000 metal and plastic heating, air conditioning, ventilation, and building products for use in homes and commercial buildings. Maintenance, renovation, or construction - we've got what you need.