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GTI Composite PC Chairs

GTI Composite PC Chairs
Made in the USA

All GTI Bar Supports are 100% Made in the USA

GTI provides the strongest Composite PC Chairs available in the market. They are made from composite material and meet or exceed the strength of comparable wire supports. The product size is identified on the top of the product. 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 PC Chairs contains rounded balls on the bottom of the feet so as not to damage formwork and remain invisible when concrete is exposed. GTI Composite PC Chairs are designed to blend in with concrete and show virtually no change in strength in temperatures ranging from 0ºF to 150ºF. Available in black or grey.

Primary Uses:

  • Precast Concrete Slabs and Wall Panels
  • Tilt-Up Concrete Wall Panels
  • Elevated Slabs


  • From ¾” to 12-½” (in ¼” increments)


  • Available in black or grey
  • Ball on foot does not damage formwork
  • Ball is virtually invisible on concrete surfaces
  • Designed for maximum aggregate flow and concrete consolidation
  • Will cradle all sizes of reinforcing bars
  • Larger stable footprint
  • Strongest chair in the industry

Product Applications:

  • DOT Department of Transportation
  • PC Precast
  • PT Post-Tensioned
  • SOG Slab-on-Ground
  • SE Slab – Elevated
  • TU Tilt-Up
1 1/4"214125216125
1 1/2"214150216150
1 3/4"214175216175
2 1/4"214225216225
2 1/2"214250216250
2 3/4"214275216275
3 1/4"214325216325
3 1/2"214350216350
3 3/4"214375216375
4 1/4"214425216425
4 1/2"214450216450
4 3/4"214475216475
5 1/4"214525216525
5 1/2"214550216550
5 3/4"214575216575
6 1/4"214625216625
6 1/2"214650216650
6 3/4"214675216675
7 1/4"214725216725
7 1/2"214750216750
7 3/4"214775216775
8 1/4"214825216825
8 1/2"214850216850
8 3/4"214875216875
9 1/4"214925216925
9 1/2"214950216950
9 3/4"214975216975
10 1/4"214981216981
10 1/2"214982216982
10 3/4"214983216983
11 1/4"214985216985
11 1/2"214986216986
11 3/4"214987216987
12 1/4"214989216989
12 1/2"214990216990

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.