Product Overview
The Cortizo COR Vision (also known as our Slimline Sliding Patio Doors SD20) is a minimalist aluminium sliding door built around a 20mm central meeting point between panels. This narrow junction allows the glazing to dominate, with glass accounting for most of the visible aperture. It’s designed for homes where natural light and clean sightlines matter, without sacrificing thermal performance or weather protection.
The system works well in extensions, garden rooms, or rear elevations where you want to open up a wall to the outdoors. Available in double or triple track configurations, with options for corner junctions and pocket installations that let panels slide into the wall cavity. If you’re after a modern look with minimal visible aluminium, it’s a practical choice.
Features
20mm central sightlines
The narrow meeting point between panels keeps frames minimal and glazing dominant
High glass-to-frame ratio
Large glazed areas flood rooms with natural light and provide clear outdoor views
Solid thermal performance
U-values from 1.3 W/m²K meet modern efficiency standards
Flexible track configurations
Choose single, double, or triple tracks depending on opening width and panel arrangement
Large panel capacities
Accommodates panels up to 2500mm wide × 3000mm high and 320kg in weight
Customisable finishes
RAL colours, anodised, and textured options with dual-colour availability
Design and Configuration Options
The COR Vision system can be configured with single, double, or triple running tracks depending on opening width and the number of panels required. Panels slide past each other, with the option for all panels to be operable or a mix of fixed and sliding.
Corner junctions are available where two runs of doors meet at 90°, with no visible central post interrupting the sightline. This creates an open corner effect when both sets of panels are slid open.
Finish options include RAL colours, anodised treatments, and textured or wood-effect coatings. Dual-colour finishes allow different colours for interior and exterior faces.
Technical Details
Frame & Glazing
- Frame depth: 116mm (double track), 182mm (triple track)
- Panel depth: 37mm
- Central sightline: 20mm
- Glazing thickness: 26–30mm
- Profile thickness: 1.7mm
Maximum Panel Sizes
- Width: 2500mm
- Height: 3000mm
- Weight: 320kg
Thermal & Acoustic
- U-value: From 1.3 W/m²K
- Thermal break: 16/24mm polyamide
- Acoustic insulation: Up to 41dB
Weather Performance
- Air permeability: Class 4
- Water tightness: Class 7A
- Wind resistance: Class C5
Enquire Now
We’ll endeavour to get back to you with your quote within 24 hours or less by email.