Bar Supports

Minimums for Classes 1, 2, and 3*
Type
Nominal
Height***
Minimum Wire Size**
Geometry
Carbon Steel
Top Wire
Legs
Runners
FCS-401
All
4 Ga.
6 Ga.
---
Legs spaced 5" on center.
FCS-403
All
4 Ga.
6 Ga.
7 Ga.
Same as 401 above.
FCS-405
Up to 1-1/2"
Over 1-1/2" to 2"
Over 2" to 3-1/2"
Over 3-1/2"
7 Ga.
7 Ga.
4 Ga.
4 Ga.
7 Ga.
7 Ga.
4 Ga.
4 Ga.
---
---
---
---
Legs spaced 2-1/2" on center.
FCS-407
Up to 2"
Over 2"
7 Ga.
4 Ga.
7 Ga.
4 Ga.
7 Ga.
4 Ga.
Same as 405 above.
FCS-409
All
---
6 Ga.
---
FCS-410
All
---
7 Ga.
---
FCS-411
2" to 5"
Over 5" to 9"
Over 9"
---
---
---
4 Ga.
---
---
---
Same as 412, below.
Longest leg will govern size of
wire to be used.
FCS-412
2" to 3-1/2"
Over 3-1/2" to 5"
Over 5" to 9"
Over 9"
---
---
---
---
4 Ga.
4 Ga.
2 Ga.
0 Ga.
---
---
---
---
Legs at 20° or less from vertical.
When height exceeds 12", legs are
reinforced with welded crosswires.
FCS-415
2" to 3-1/2"
Over 3-1/2" to 5"
Over 5" to 9"
Over 9"
2 Ga.
2 Ga.
2 Ga.
2 Ga.
4 Ga.
4 Ga.
2 Ga.
0 Ga.
---
---
---
---
Legs at 20° or less from vertical.
All legs 8-1/4" on center max., with leg
within 4" of chair end and spread between
legs not less than 50% of nominal height.
FCS-417
2" to 5"
Over 5" to 9"
Over 9"
2 Ga.
2 Ga.
2 Ga.
4 Ga.
2 Ga.
0 Ga.
4 Ga.
4 Ga.
4 Ga.
Same as FCS-415 above.

Note* Top wire on continuous supports, not otherwise designated as corrugated, may be straight or corrugated
at the option of the manufacturer.
Note** Minimum wire sizes are American Steel and Wire gauges.
Note*** Nominal height of the bar support is taken as the distance from the bottom of the leg, sandplate or runner wire to the bottom of the reinforcement. Variations for plus or minus 1/8" from the stated nominal height is generally permitted.

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