Foundation
Chair.

• Comfort that holds the crowd. Deep-contoured seat and back geometry keeps fans in their seats through the fourth quarter, not standing in the concourse.
• The cup holder pays for itself. Front-mounted in the armrest or rear-mounted beside it. Your call, included either way. Fans buy more when they have somewhere to set it down.
• Weather isn't a warranty problem. A UV-stabilized, through-color polymer shell. It doesn't fade to chalk, chip, splinter or ever need repainting.
• Every chair is rail mounted. Chairs hang from a continuous rail instead of dozens of floor penetrations, and the fold-up seat clears the row. Crews sweep and wash straight down the deck, and the deck line stays clean, uninterrupted and finished-looking.
• Retrofits what you already own. The rail fastens to the deck or to the riser, so it drops onto existing concrete and aluminum decking. No structural rebuild^*, no lost season.
• We already own the inventory. Gray, Royal Blue and Red sit on our floor, not on a production schedule. No custom run, no expedite fee, no rush freight. That is why the lead time is about four weeks and why the price is lower.

* Retrofit suitability is subject to field verification of the existing structure.

• One rail covers the whole bowl. Seat centers adjust from 18.75″ to 24″ on a single rail system, so varying row geometry does not mean a second part number.
• Under 10 lbs, fully assembled. Two people set a section by hand. No lifting equipment, and less dead load carried by the riser.
• Nothing to maintain. The hinge returns the seat to ¾ fold on its own. No lubrication and no adjustment, for the life of the installation.
• Armrests and cup holders standard. Not an upcharge, not a change order.

Two styles, both included on every chair. Never a line item, never an upgrade.

• Front cup holder. Molded into the front of the armrest. One piece, nothing to loosen.
• Rear cup holder. Mounts at the rear of a slim armrest. Full size, no armrest bulk.

Three standard colors, on our floor, not on a schedule

Custom colors are available on orders over 500 seats. A lead-time extension may apply.

Lead time is measured from order release on standard stock colors. The final installation schedule is subject to installer availability.

Seat & back

One-piece, double-wall, gas-assisted injection molded polypropylene; min. 0.125″ wall; UV inhibitors compounded before molding

Supports

Die-cast aluminum brackets; screws threaded into inserts, no through-fasteners, none exposed on the seat or back face

Hinge

Glass-reinforced polyamide, UV inhibited; automatic ¾ fold return, no lubrication or adjustment

Armrests

Glass-reinforced polyamide, closed hollow section; no external ribbing, no water traps. Standard

Cup holder

Rear or front armrest mount; copolymer polypropylene, UV inhibited. Standard

Mounting

Rail mounted. Concrete riser (8″–24″ rise, no additional attachment plates), concrete floor or tread, or direct to structural steel. New and retrofit

Finish

Steel hot-dip galvanized per ASTM A123 with black powdercoat; aluminum black powdercoat; anchors galvanized or stainless

Seat centers

Armrest centers adjustable 18.75″–24″; 19.75″ minimum seat center with armrest

Dimensions

Seat height 17″; seat depth 16.5″; armrest height 22.25″; armrest length 8″; overall height 32.34″ tread-mounted, 29″ riser-mounted; backrest 19″ along the back face; 10″ deep folded

Weight

Under 10 lbs, fully assembled

Accessibility

ADA compliant; ADA companion seating available

Identification

Row, seat and end-of-row ID; anodized aluminum plates, .025″ thick, black graphics, riveted

Lead time

About 4 weeks on standard stock colors

Warranty

3 years, materials and workmanship; extended coverage available with an annual maintenance agreement

The full product data sheet is available on request.

Independently tested by SGS to EN 12727:2016 Level 4, the severe-use classification written for stadiums, arenas, cinemas and airports. All tests passed. The full report is available on request.

Static load

2,000 N (450 lbf) seat and seat front edge; 760 N (171 lbf) back horizontal; 900 N (202 lbf) back vertical

Durability

200,000 cycles combined seat and back, and seat front edge; 100,000 cycles back horizontal and tipping seat operation

Impact & safety

11.8″ seat and 24.4″ back impact; general safety, shear and squeeze points per EN 12727:2016 §5.1–5.2

Armrests

EN 1728:2012: 1,000 N (225 lbf) sideways and downward static; 400 N durability at 100,000 cycles; 24.4″ impact

References

EN 12727:2016 Level 4 · EN 1728:2012 · ICC 300 · IBC 2015/2018/2021 · ASTM A123 · KY, AL, TN, MS and OH amendments

• A floor plan or site plan, however rough
• A seat target, or the row and bay geometry you already have
• Mounting condition — riser, tread, slab or existing structure
• Color: Gray, Royal Blue or Red from stock, or a custom match to school or club colors
• The date the building has to be back in use

Get a Foundation Chair takeoff for your venue: layout, seat count, color match and budget pricing.

Request a takeoff →