Cortizo Slimline 20 Sleek, thermally-efficient sliding system maximizing natural light with ultra-slim aluminum profiles.

Double Track

20mm Interlock

Triple Track

Hidden Track

Ultra-sleek design featuring a minimal 20mm sightline, with innovative concealed framing and seamless perimeter integration.

TRANSMITTANCE

Uw ≥ 1.3 (W/m²K)

ACCOUSTIC

Rw up to 41 dB

Air

Class 4

WATER

Class 7

WIND

Class C5

BFRC Rating

A

The Cortizo Slimline 20 sliding door system is the ultimate choice for modern, minimalist design and maximum natural light. With an ultra-slim 20mm interlock and flush, non-protruding frame, it creates an elegant, seamless connection between indoor and outdoor spaces.

It offers versatile configurations, including floating corners and pocket doors, 90-degree mullion-free corners, and glass-to-glass fixed panes for uninterrupted views. Integrated frame ventilation allows the entire frame to be buried, enhancing the clean aesthetic.

Beyond its sleek appearance, the Slimline 20 delivers superior thermal performance, helping to maintain indoor comfort and reduce energy costs. One of the only PAS24 security-tested 20mm sliding doors, it combines precision engineering with high insulation, making it the ideal choice for architects and homeowners seeking style, security, and efficiency.

What makes the ARC Slimline – 20 Different to the rest?

Ultra-Slim 20mm Interlocks – No bulky reinforcing bar, just sleek minimalism.
Integrated Trickle Ventilation – Built into the frame for a truly seamless finish.
PAS24 Security Tested – One of the only 20mm sliding doors approved for enhanced security.

aluminium door configurations

Sightlines	slim 20m interlock
Glazing	max 32mm, double or triple glazed
Max Sash Dimensions	Width 2500mm, Height 3000mm (speak to one of our experts if your dimensions exceed this).
Max Sash Weight	320kg
Colour	150 + RAL colours including textured and anodised finishes.
Security	Available with PAS24 security
Configurations	2 track, 3 track, quad track

Datasheet

An integrated locking system

That can be embedded within the interlock, enabling the sashes to remain hidden while ensuring smooth sash crossing.

GREY

BLACK

WHITE

LIGHT

DARK

CUSTOM

Gallery

See these products in real projects.

Gallery

Design & Installation

– Seamless Solutions from Start to Finish –

We offer a complete end-to-end service, including a full survey, expert professional advice, and tailored design solutions. From supply to installation, we ensure every step is seamless and customized to meet your needs.

Pricing

– Official Suppliers with Competitive Rates –

As an official Smart Architectural Aluminium supplier and fitter, we offer competitive pricing and our expert team ensures you receive exceptional value for your investment, with tailored solutions to meet your specific requirements and budget.

Delivery & Lead times

– Reliable Timelines, Prompt Delivery –

We prioritise efficient delivery and reliable lead times, ensuring your products arrive on schedule. Our team works diligently to provide accurate timelines, keeping you informed every step of the way, so you can plan with confidence.