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APX20 Ultra Slim.

Ultra-slim 20mm interlock with up to 94% glass-to-frame ratio. Panels up to 3m tall at 320kg, PAS 24 security tested.

20 mm Sightline
From 1.3 U-Value (W/m²K)
320 kg Max Panel
PAS 24 Security

APX20 Ultra Slim

Slimline Aluminium Sliding Door System

Sightline

20mm

U-Value (W/m²K)

From 1.3

Max Panel

320kg

Security

PAS 24

Warranty

10 Year

Install

FENSA Certified

A 20mm Interlock That Stays 20mm

Most 20mm sliders only measure 20mm head on. Look from the side and the interlock protrudes 45 to 65mm, and the slim sightline you were sold disappears. The APX20 uses an integrated flush interlock that sits level with the sash, so the profile reads 20mm from every angle. Upgraded rollers and glass specification complete the system, with up to 94% glass-to-frame ratio.

APX20 Ultra Slim sliding door installed by Apex

Specifications

2500mm
Max Width
3000mm
Max Height
320kg
Max Weight
26-30mm
Glass Thickness
From 1.3
U-Value (W/m²K)
Class 4
Air Permeability
Class 7A
Water Tightness
Class C5
Wind Resistance
41 dB
Acoustic (Rw)

Integrated flush interlock, 20mm visible from the front and level from the side, where standard 20mm systems protrude 45 to 65mm. Upgraded roller system for the panel weights. Glazing 26 to 30mm. Polyamide thermal break strips (16/24mm). Profile thickness 1.7mm. Frame depths: 116mm (double track) / 182mm (triple track). 90° corner junctions without mullion. Pocket door system available. Sash width 37mm.

Single, double and triple-track configurations. 2, 3, 4 and 6-panel options. Pocket sliding for panels that disappear into the wall cavity. 90° corner opening without mullion.

Standard colour range: Black (RAL 9005), Anthracite Grey (RAL 7016), and White (RAL 9016). Bespoke finish: full RAL colour palette available on request, including textured, matte, satin, and dual-colour (different inside vs outside) options. Powder-coated to BS EN 12206-1 with 25-year colour-stability guarantee.

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