Seat and backrest

The following options are available for the Cadeira models 4L, 4L-ARM / FRONT, 4L-ARM:
Wood – no upholstery, seat and backrest made entirely of wood. Seat shell made of 8-layer plywood, thickness 10.5 mm.
Seat-Plus (upholstered seat pad) – seat pad made of 3-layer plywood (thickness 4.5 mm), covered with foam (density 25 kg/m³, thickness 15 mm). Backrest made of wood.
Plus (separately upholstered seat pad and backrest pad) – seat pads made of 3-layer plywood (thickness 4.5 mm), covered with foam (density 25 kg/m³, thickness 15 mm). Back of the backrest made of wood.
B-Plus (front part of the chair fully upholstered) – pad made of 3-layer plywood (thickness 4.5 mm), covered with foam (density 25 kg/m³, thickness 15 mm). Back of the backrest made of wood.
A-Plus (fully upholstered seat and backrest) – plywood seat shell made of 8-layer beech plywood (thickness 10.5 mm), covered with foam (density 25 kg/m³, thickness 20 mm (seat); 15 mm (backrest); 10 mm (back and bottom of the seat shell)).
LL (LAMINATE) – plywood seat shell made of 8-layer beech plywood (thickness 10.5 mm). Laminated wood components (with non-laminated plywood edges, protected with wax) – option. 15 wood colours available.
WALL PROTECTION SYSTEM – 40 mm distance between backrest and the wall (prevents the wall from being scratched).

Armrests

Integrated with the chair frame.
Armrest pads made of 10-layer plywood (thickness 12 mm) dyed, laminated or plastic.
4L-ARM / FRONT model – a chair to be hung on the table top. 
Plastic armpad is made of polypropylene reinforced with glass fiber.

Link for connecting chairs into rows

CLICK-J4 – link for connecting chairs into rows; consists of a hook and a buckle made of a Ø 6 chromium-plated rod. The click can be hidden under the chair seat while not used. Chairs with CLICK J-4 can be stacked. 
CLICK-J3-NRM – link for connecting chairs into rows with a place for interchangeable magnetic numbering. The click consists of a Ø 6 chromium-plated rod, plastic sockets for seat and row magnetic number plates and a plastic catch. Plastic elements are made of polyamide reinforced with glass fiber. The click can be hidden under the chair seat while not used. Chairs with CLICKJ3-NRM can be stacked. 
UNIVERSAL ROW LINKING SYSTEM (ROWLINK 520 + 60): 
– dedicated for 4-leg chairs (max leg diameter: 25 mm, max rear leg angle: 18°),
– distance regulation: 60 mm, 7-step distance, adjustment lock function (10 mm stroke),
– distance adjustment marking,
– floor mounting option,
– distance adjustment for AXO versions with glides G17F G3, G3F: 410–470 mm.
The linking system is made of: a steel bar 40 × 4 mm, steel tube Ø 54 × 3.2 mm, steel foil 1 mm thick, and PP slide bearing. Powder-coated in black, RAL 9005. ROWLINK EN14703 Link for connecting chairs into rows.
It consists of 4 elements made of 4 mm foil. Two pieces are screwed to the chair frame with M6 screws and two central ones are assembled with a M10 screw. Chairs with ROWLINK EN14703 can be stacked. 

Writing tablet

Writing tablet (right- or left-hand version) made of 8-layer beech plywood (thickness 12 mm). Frame made of Ø 12 rod, chromium-plated. Joints made of polyamide with glass fibre. Available for the Cadeira 4L-ARM model only. Available also in laminate. 

Hanger for Cadeira tablets

Hanger for Cadeira tablets can store up to 25 tablets. It can be dissembled into a pair of legs and two bars. Frame made of steel tube Ø 22 × 1.5 mm. Pair of legs and the bottom bar are powder-coated in RAL 9006, while the upper bar is chromium-plated. Castors with a brake.

Frame 

Chair frame made of chromium-plated steel tubes: 
Legs – tube Ø 22 × 2 mm. 
Front / back linking unit, armrest bracket – tube  Ø 22 × 2.5 mm.
Stacking: up to 6 pieces.

Glides

Glides made of polypropylene. Self-levelling glides for hard or soft floors – the chair with glides is approx. 20 mm higher.
Acoustic glides – special structure reducing noise emitted by glides by over 50% as compared to standard glides. Glides cause no scratching of surfaces – the chair with acoustic glides is approx. 10 mm higher.