The Pera 4 Prong Swivel Castors Chair by B&T Design Studio is a modern upholstered chair that combines clean lines, everyday comfort, and easy mobility in one refined design. Designed by Alp NuhoÄŸlu in 2003, this version of the Pera collection reflects a minimal design language with a strong focus on versatility, making it well suited to a wide range of workplace, meeting, education, and other commercial interiors.
Despite its simple silhouette, the chair’s scoop-shaped seat is designed to provide a high level of comfort. Its structure is made from injection-molded polyurethane foam over a steel frame, creating a durable shell built for long-term performance in high-use environments. Paired with a 4-prong swivel base on castors, it offers added flexibility and smooth mobility while maintaining a clean, contemporary presence.
Available with multiple base types across the wider collection, the Pera family is designed to adapt to diverse interior settings. The chair can be upholstered in any fabric or leather from the B&T Design collection, giving designers flexibility in texture and colour.
Dimensions and weight
Inches 21w | 21d | 32h | 18sh | 25.5 arm height
Yardage
COM 1 yard //  COL 17 sq ft
Details
Base: Solid steel legs, powder-coated. Casters added.
Seat options: Injection molded over steel structure. Extremely durable for heavy traffic use.
Upholstery: Fabric + Faux Leather + Genuine Leather
4 legged steel rod base.
Wood dowel base
4 prong swivel base.
4 prong swivel stationary base with armrests.
Four prong spider base. With or w/out castors.
5 prong premium base. Seat with or w/out armrests.
The upholstery materials shown in the attached PDF represent our standard offering. If you do not see the material or color you need, please contact us for additional options.
Most NUANS seating is available in Customer’s Own Material (COM) and Customer’s Own Leather (COL). Please refer to the technical specs tab or our product booklets for detailed yardage requirements.
All COM/COL materials must be shipped directly to the NUANS warehouse for processing.
Reference prices before trade discounts.
Actual selling prices vary based on customer-specific trade and dealer discounts. Contact our sales team for net trade pricing.
| Image | Variant | COM / COL | CAT A | B | C | D | E | F | Leather |
|---|---|---|---|---|---|---|---|---|---|
 | Upholstered1 yd 17 sq.ft | $920 | $920 | $955 | $1,000 | $1,045 | $1,095 | $1,140 | $1,115 |
| Image | Variant | COM / COL | CAT A | B | C | D | E | F | Leather |
|---|---|---|---|---|---|---|---|---|---|
 | Upholstered1.1 yd 17 sq.ft | $1,105 | $1,105 | $1,145 | $1,195 | $1,245 | $1,295 | $1,350 | $1,315 |
| Image | Variant | COM / COL | CAT A | B | C | D | E | F | Leather |
|---|---|---|---|---|---|---|---|---|---|
 | Upholstered1 yd 17 sq.ft | $930 | $930 | $965 | $1,010 | $1,060 | $1,105 | $1,150 | $1,125 |
| Image | Variant | COM / COL | CAT A | B | C | D | E | F | Leather |
|---|---|---|---|---|---|---|---|---|---|
 | Upholstered1.1 yd 17 sq.ft | $830 | $830 | $865 | $910 | $955 | $1,000 | $1,045 | $1,020 |
| Image | Variant | COM / COL | CAT A | B | C | D | E | F | Leather |
|---|---|---|---|---|---|---|---|---|---|
 | Classic | $1,010 | $1,010 | $1,045 | $1,095 | $1,140 | $1,185 | $1,230 | $1,205 |
 | Upholstered1 yd 17 sq.ft | $1,240 | $1,240 | $1,280 | $1,330 | $1,380 | $1,435 | $1,485 | $1,450 |
| Image | Variant | COM / COL | CAT A | B | C | D | E | F | Leather |
|---|---|---|---|---|---|---|---|---|---|
 | Upholstered0.7 yd 11 sq.ft | $830 | $830 | $850 | $880 | $915 | $945 | $975 | $935 |
| Image | Variant | COM / COL | CAT A | B | C | D | E | F | Leather |
|---|---|---|---|---|---|---|---|---|---|
 | Upholstered0.7 yd 11 sq.ft | $830 | $830 | $850 | $880 | $915 | $945 | $975 | $950 |
| Image | Variant | COM / COL | CAT A | B | C | D | E | F | Leather |
|---|---|---|---|---|---|---|---|---|---|
 | Upholstered0.7 yd 11 sq.ft | $1,140 | $1,140 | $1,160 | $1,190 | $1,225 | $1,255 | $1,285 | $1,260 |
| Image | Variant | COM / COL | CAT A | B | C | D | E | F | Leather |
|---|---|---|---|---|---|---|---|---|---|
 | Upholstered0.7 yd 11 sq.ft | $760 | $760 | $780 | $810 | $845 | $875 | $905 | $880 |
| Image | Variant | COM / COL | CAT A | B | C | D | E | F | Real Leather |
|---|---|---|---|---|---|---|---|---|---|
 | w/out ARM1 yd 17 sq.ft | $1,440 | $1,440 | $1,475 | $1,525 | $1,575 | $1,625 | $1,675 | $1,650 |
 | with ARM | $1,630 | $1,630 | $1,675 | $1,730 | $1,785 | $1,840 | $1,895 | $1,860 |
| Image | Variant | COM / COL | CAT A | B | C | D | E | F | Leather |
|---|---|---|---|---|---|---|---|---|---|
 | Upholstered1.5 yd 20 sq.ft | $1,000 | $1,000 | $1,050 | $1,120 | $1,180 | $1,250 | $1,315 | $1,210 |
| Image | Variant | COM / COL | CAT A | B | C | D | E | F | Leather |
|---|---|---|---|---|---|---|---|---|---|
 | Upholstered1.5 yd 20 sq.ft | $1,195 | $1,195 | $1,245 | $1,310 | $1,375 | $1,440 | $1,510 | $1,400 |
 | with Memory Return Mechanism | $1,360 | $1,360 | $1,410 | $1,475 | $1,540 | $1,610 | $1,675 | $1,565 |
| Image | Variant | COM / COL | CAT A | B | C | D | E | F | Leather |
|---|---|---|---|---|---|---|---|---|---|
 | Upholstered1.5 yd 20 sq.ft | $1,480 | $1,480 | $1,530 | $1,605 | $1,675 | $1,750 | $1,820 | $1,705 |
 | with Memory Return Mechanism | $1,645 | $1,645 | $1,695 | $1,770 | $1,840 | $1,915 | $1,985 | $1,870 |
