Home » Bar Supports » GTI Composite Bar Chairs

GTI Composite Bar Chairs

GTI Composite Bar Chairs
Made in the USA

All GTI Bar Supports are 100% Made in the USA

GTI provides the strongest Bar Chairs available in the market. They are made from composite material and meet or exceed the strength of comparable wire supports. GTI composite material offers continuous corrosion protection, both on the job-site and in concrete providing a great alternative to epoxy, stainless, and galvanized bar supports.

The GTI line of Composite Bar Chairs contains points on the bottom of the feet that firmly hold the chair in place and feet that can be stapled to the deck when necessary. GTI Composite Bar Chairs are available in Black or Grey and show virtually no change in strength in temperatures ranging from 0ºF to 150ºF.

Primary Uses:

  • Single Mat Support – Post-Tensioning, Rebar, or Wire Mesh
  • Bottom Layer Double Mat Support – Post-Tensioning, Rebar, or Wire Mesh
  • Slab-on-Ground using a Sand Plate


  • From ½” to 6” (in ¼” increments)


  • Feet that can be stapled
  • Points on legs ensure minimal surface contact
  • Designed for maximum aggregate flow and concrete consolidation
  • Will cradle all sizes of reinforcing

Product Applications:

  • DOT Department of Transportation
  • PC Precast
  • PT Post-Tensioned
  • SOG Slab-on-Ground
  • SE Slab – Elevated
1 1/4"210125
1 1/2"210150
1 3/4"210175
2 1/4"210225
2 1/2"210250
2 3/4"210275
3 1/4"210325
3 1/2"210350
3 3/4"210375
4 1/4"210425
4 1/2"210450
4 3/4"210475
5 1/4"210525
5 1/2"210550
5 3/4"210575

See Patents for a listing of many of the patents licensed to GTI, including patents that may cover one or more of the products identified on this page.

Notice of exclusive terms and conditions: all sales or purchases by gti respectively incorporate and adopt gti’s standard terms and conditions of sale or purchase and the specific terms (e.g. delivery, price, quantity) of each specific transaction all as set forth in the controlling purchase order.

PROPER CARE AND USAGE: Do not leave GTI Bar Supports in the sun or in bright daylight for prolonged periods of time – composites, plastics, and bags may become brittle; the material used to manufacture GTI Bar Supports is physiologically safe and resistant against all acids and alkaline solutions used in the construction industry; do not apply oils, release agents, or similar products to GTI Bar Supports; under certain conditions small rupture may occur at the surface of concrete in the vicinity of GTI Bar Supports when too much oil or release agent is used on the formed surface – further causes may be poor cleaning of the concrete surface and improper use of primer when painting; GTI Bar Supports have been used world-wide in every climatic condition without complaint.