Synchronous mechanism EPRON SYNCRON PLUS – made of aluminium with plastic elements. Functions:

• free floating possibility,
• backrest and seat tilt synchronously at the rate of 2:1,
• backrest tilt angle of 22° synchronised with seat tilt angle of 11°,
• backrest lock in 5 positions,
• adjustable negative seat angle (-2°) with a button (extra option),
• backrest height adjustment: 60 mm,
• adjustable backrest tilt force with a crank,
• seat depth adjustment: 60 mm (extra option),
• Anti-Shock – a feature protecting the user's back from being hit by the backrest after the lock is released,
• smoothly adjustable chair height with a gas lift.

SELF mechanism with the S-MOVE system. Functions:

• automatic adjustment to the user’s weight (range from 50 kg to 110 kg),
• backrest and seat tilt at the rate of 4:1,
• backrest inclination angle: 18°,
• seat inclination angle: 4.5°,
• backrest lock in 5 positions,
• seat depth adjustment: 53 mm (extra option),
• seat movement: dynamic sitting, movement in 4 directions,
• black or white mechanism cover, depending on the main colour version of the chair,
• backrest height adjustment: 60 mm.

SELF mechanism. Functions:

• automatic adjustment to the user’s weight (range from 50 kg to 110 kg),
• backrest and seat tilt at the rate of 4:1,
• backrest inclination angle: 18°,
• seat inclination angle: 4.5°,
• backrest lock in 5 positions,
• seat depth adjustment: 53 mm (extra option).

Seat and backrest

Swivel chair:
Seat – structure made of 7-layer beech plywood with 10,5 mm thickness, covered with foam (density: 40 kg/m³ with 70% increased flexibility), thickness: 20 mm, and foam with a density of 35 kg/m³, thickness: 10 mm. Seat cover made of polypropylene, black or white.
Backrest – structure made of plastic (mix of PP and TPE) and covered with foam, density: 25 kg/m³ – thickness: 20 mm at the front and 6 mm at the back.
Mesh backrest – backrest structure made of polyamide with glass fibre (30%), backrest connector support made of a steel flat bar with 8 mm thickness. The backrest has a height adjustment range of 60 mm. Mesh – material: 66% polyester, 34% polyamide, approvals: flammability – EN 1021 Part 1, cigarette; abrasion 200,000 cycles – EN ISO 12947–2.
Lumbar support (upholstered backrest) – lumbar support adjustment – Schukra® mechanism (front–rear, adjustment range: about 20 mm). Lumbar support (mesh backrest) – lumbar support adjustment (up&down, adjustment range: 53 mm).
Headrest – upholstered headrest for the model with the upholstered backrest, height adjustment (adjustment range: 65 mm) and headrest angle adjustment; mesh – for the mesh backrest model, adjustable headrest height (adjustment range: 65 mm) and angle.

Visitor chair:
Seat – fully upholstered: structure made of 6-layer beech plywood with 9 mm thickness and covered with a two-ply cut foam form with a density of 40 kg/m³ and 15 mm thickness, and 35 kg/m³ with 16 mm thickness. Plastic seat cover (PP) in black or white, depending on the main colour version of the chair.
Backrest – fully upholstered – structure made of 6-layer beech plywood with 9 mm thickness and covered with a cut foam form with a density of 25 kg/m³ and 20 mm thickness at the front, and a cut foam form with a density of 35 kg/m³ and 6 mm thickness.

Armrests

Adjustable  2-D/4-D – structure made of PA + GF, pad made of PP + TC (polypropylene + talc):

• 2-D in black with black pads made of TPE,
• 2-D in white and alu colours with black pads made of TPE,
• 4-D in black with black pads made of TPE,
• 4-D in white and alu colours with black pads made of TPE.

Adjustment range:

• 2-D: 100 mm height; 40 mm width adjustment,
• 4-D: 100 mm height; 40 mm width adjustment, pad rotation range +/- 30°, front/back pad movement range: 50 mm.

Fixed – made of PA + GF, pad made of TPE:

• fixed in black, with black pads made of TPE,
• fixed in white, with black pads made of TPE.

Chair base

Swivel chair – five-star base made of polyamide (black or white), polished aluminum (chromium-plated) and powder-coated in ALM (metallic version).

Visitor chair:
Cantilever base – Ø 22 × 3 mm steel tube, stackable up to 3 chairs;
4-leg base – Ø 22 × 2 mm steel tube, stacking possibility: 2 chairs for the 2ME–S 4L model;
For the visitor chair the frame can be covered with galvanised chrome or powder-coated in ALM – metallic alu (ab. RAL 9006 Metallic), W – white with texture (RAL 9003) or BL – black with texture (RAL 9005).

Glides / Castors

Swivel chair – double-link black castors, Ø 65 mm, for hard or soft floors with a load-controlled braking mechanism. Optional ring castors for soft floors (ESHR) or hard floors (ESHHR).

Visitor chair

• cantilever base: glides for soft or hard floors,
• 4-leg base: jointed glides for hard or soft floors.