Cortizo COR 4200 is the most adaptable sliding system in the range, having won its popularity through a singular knack for vanishing. It is the go-to answer for balcony or terrace access where space is tight. This model's main "superpower" is the Galandage option: sashes can glide into a wall cavity and open the aperture 100%. With it you dissolve the boundary between living room and garden, achieving a completely unobstructed passage.
Despite its slender build (the visible sash width at the central meeting point can be kept to a minimum), the COR 4200 includes a full thermal break, which makes it suitable for living spaces. Stainless steel inserts reinforce the aluminium tracks, keeping sash movement remarkably light and smooth even after years of use. This is the choice for anyone who wants maximum light and air while making sensible use of every square metre.
Brand
Cortizo is the flagship of Spanish industry with headquarters in Galicia. The brand is famous for Cor Vision aluminum systems with virtually invisible profiles. If you need panoramic glazing for a villa or modern home — Cortizo is unrivaled.
More about CortizoTechnical Specifications
A celebrated sliding system that can disappear into a wall pocket (Galandage). It strikes an ideal balance between saving space, modern styling and everyday practicality.
Engineering Specifications:
Glazing Choices:
Largest Sizes and Mechanics:
Tested Performance:
A celebrated sliding system that can disappear into a wall pocket (Galandage). It strikes an ideal balance between saving space, modern styling and everyday practicality.
For a 2-panel sliding system (3000 × 2200 mm) with basic double-glazed unit.
Alternative solutions from other manufacturers
Side by side
How Cortizo COR 4200 stacks up against the closest matches from other brands.
| Specification | Cortizo COR 4200This profile | WDS SL60 | Rehau High-Design Slide | Schüco ASE 60 |
|---|---|---|---|---|
| Brand | Cortizo | WDS | REHAU | Schüco |
| Material | Aluminium | PVC | PVC | Aluminium |
| Profile depth | — | 60 mm | — | — |
| Chambers | — | 3 chambers | — | — |
| Glass unit, max | up to 26 mm | up to 18 mm | up to 24mm | up to 40mm |
| Thermal (Uw) | ≤ 1.6 | 1.6 | 1.5 | 1,1 |
| Sound (Rw, dB) | ≈ 38 dB | ≈30 dB | — | ≈ 41 dB |
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FAQs
Each moving sash runs up to 1500 mm wide and up to 2600 mm high, with a mass of up to 100 kg per pair of rollers. The frame depth is 60 mm for two tracks and 115 mm for three, and you can specify 1, 2, 3 or 4 sashes inline. Stay inside those limits and the rollers glide smoothly for years.
The sash takes a glazing thickness of up to 26 mm, which covers double-glazed units, tempered glass and laminated glass. That suits a lightweight inline slider well, though it sits below heavier Cortizo systems: the 4900 Corredera reaches 36 mm and the COR Vision PLUS up to 54 mm for thicker triple or acoustic builds.
Independent testing rates it at Class 7A watertightness, Class 3 air permeability and Class C5 wind load, with dense brush seals plus a central plastic fin-seal to block wind and dust. Frame heat transfer (Uf) starts from 3.0 W/m2K and the whole window reaches a Uw of ≤ 1.6 W/(m2K) depending on the glass.
It is an inline slider, so it cannot match a casement window on raw airtightness, and very large or heavy openings hit its 100 kg per roller-pair and 26 mm glass ceilings. For thicker triple glazing or a near-flush look, step up to the lift-and-slide E 170 (up to 40 mm, Uw ≤ 0.9) or the minimalist COR Vision and COR Vision PLUS.
The COR 4200 is the space-saving entry point with a Uw of ≤ 1.6 W/(m2K) and roughly 38 dB of sound reduction. By the numbers, the 4900 Corredera improves to ≤ 1.3 and 36 mm glass, the COR Vision reaches ≤ 1.3 with slim sightlines, and the COR Vision PLUS leads at ≤ 0.9 W/(m2K).
The profiles use aluminium alloy 6063 T5 with RPT thermal break, fitted with polyamide inserts of 14–20 mm in the frame and 20–25 mm in the sash. The running track is an aluminium profile carrying a replaceable stainless-steel track that limits roller wear, and sashes come in clean contemporary or curved classic styling.
