REVO synchronous mechanism - functions:

• synchronous tilting of the seat (9°) and backrest (21°),
• negative seat inclination angle (5°), 
• possibility of backrest lock in 5 positions
• seat depth adjustment in 6 positions (adjustment range 65 mm), 
• adjustable backrest tilt force,
• Anti-Shock – a feature protecting the user's back from being hit by the backrest after the lock is released.

Seat, backrest and headrest

Swivel chair
Seat – structure made of 8-layer beech plywood (thickness 11 mm), covered with injected foam (thickness 40 mm).
Backrest – upholstered on both sides, structure made of composite chipboard (thickness 12 mm), covered with foam (front of the backrest: density 40 kg/m³, thickness 20 mm, back of the backrest: density 40 kg/m³, thickness 9 mm).
Lumbar support mechanism – backrest can be fitted with a pneumatic lumbar support mechanism for the adjustment of lumbar support cushion inflation range.
Headrest – fixed, upholstered on both sides. Structure made of beech plywood (thickness 10 mm), covered with foam, front of the headrest: density 40 kg/m³, thickness 20 mm, back of the headrest: density 40 kg/m³, thickness 9 mm.

Visitor chair
Main frame – shell made of 9-layer beech plywood (thickness 9 mm), covered with foam (density 21 kg/m³, thickness 9 mm).
Seat – seat cushion frame made of 3-layer plywood (thickness 3.6 mm), covered with foam (density 40 kg/m³, thickness 30 mm). Seat is fitted with a soft upholstered stacking cushion.
Backrest – backrest cushion frame made of 3-layer plywood (thickness 3.6 mm), covered with foam (density 35 kg/m³, thickness 25 mm).

Armrests

4-D, 3-D, height-adjustable or fixed armrests.
Swivel chair

• height-adjustable armrests. Armpads made of PU. Chromium-plated or black metal frame, the remaining components made of PA + GF. Adjustment range: 80 mm.
• 3-D adjustable armrests. Chromium-plated or black metal frame, the remaining components made of PA + GF. Pads made of PU. Adjustment range: height 80 mm, pad rotation +/-25°, pad adjustment front-back: 50 mm.
• 4-D adjustable armrests. Carcass – cast aluminium, the remaining components made of PA+GF, pads made of PU. Adjustment range: height 80 mm, pad adjustment sideways (right-left): 50 mm, pad adjustment front-back: 40 mm, width 50 mm.
• fixed armrests: frame made of a flat bar with upholstered pads. Armrests frame is chromium-plated (galvanic coating) or powder-coated in ALU (RAL9006).
  
  Armrest pads are upholstered with black leather. If your choice of the overall upholstery colour is other than black, the armpads are upholstered with leather of the same colour to match the overall effect where applicable. This rule does not concern imitation leather: Kaiman, Valencia, Silvertex and fine leather. In these cases, the armpads are upholstered with the same finish as the chair's overall upholstery.

Visitor chair:

• armrests with wooden pads integrated with the chair frame made of steel tube Ø 22 × 2.5 mm.

Base

Swivel chairs – five-star base available as a polished aluminium (chromium version) or powder coated in ALU (RAL 9006) version. Protective plastic covers.
Visitor chair cantilever – steel tube Ø 22 × 2.5 mm / Ø 22 × 2.0 mm.
Visitor chair 4-leg – steel tube Ø 22 × 2.5 / Ø 22 × 2.0 mm.
In the visitor chair the frame can be chromium-plated (galvanic coating) or powder-coated in ALU (RAL 9006).

Castors / Glides

Swivel chair – double-link castors for hard or soft floors, Ø 65 mm, with a load-controlled braking mechanism. Castors conform to the standard EN-12529.
Glides available for hard or soft floors.

Visitor chair – glides for soft floors or self-levelling glides for hard or soft floors. When self-levelling glides are used, height of the product increases by approx. 20 mm.