These systems use a long lever handle. When turned 180°, the internal gearing acts like a cantilever, physically lifting the entire door leaf off its gaskets. This disengages the seals and removes all friction.
It is incredibly easy to move massive glass panes (up to 400kg) with a single hand because the door is hovering on its wheels.
In a standard sliding system, the weather seals are always engaged. When you unlock the door, you are pushing the glass against the friction of the weather stripping.
It is slightly quicker to unlock, and the profiles are significantly slimmer because they don't need to house heavy-duty lifting gear.
As standard, we fit these with internal lever handles and thumbturns. When the handle is in the "down" position, the heavy weight of the door sits firmly on the frame, making it physically impossible for an intruder to lift the wheels from the outside. If you want to use this as a main entrance, we can add a double-lever handle with an external key cylinder.
To achieve the ultra-slim look, this system often uses an embedded handle hidden within the wall. This looks incredible but limits you to internal locking only. If you require an external key cylinder, we must use a larger profile to house the lock, which slightly increases the visible frame.
This system can be engineered for a completely seamless, "zero threshold" transition, meaning there is absolutely no difference in height between your inside floor and outside patio.
Passage Tip: We strictly recommend the "True Zero" threshold only for covered areas (such as beneath a deep overhang, canopy, or balcony). Without a physical step, even with hidden integrated drainage, fully exposed Irish elevations carry a high risk of wind-driven water ingress.
This system easily meets level threshold regulations but does so with a minimal "step-over" (usually 20mm to 25mm). The track is naturally wider to house the heavy-duty lifting gear. This tiny physical step is crucial for exposed sites, acting as a highly effective weather barrier while still providing a premium, accessible finish.
As standard, we fit these with internal lever handles and thumbturns. When the handle is in the "down" position, the heavy weight of the door sits firmly on the frame, making it physically impossible for an intruder to lift the wheels from the outside. If you want to use this as a main entrance, we can add a double-lever handle with an external key cylinder.
To achieve the ultra-slim look, this system often uses an embedded handle hidden within the wall. This looks incredible but limits you to internal locking only. If you require an external key cylinder, we must use a larger profile to house the lock, which slightly increases the visible frame.
As standard, we fit these with internal lever handles and thumbturns. When the handle is in the "down" position, the heavy weight of the door sits firmly on the frame, making it physically impossible for an intruder to lift the wheels from the outside. If you want to use this as a main entrance, we can add a double-lever handle with an external key cylinder.
To achieve the ultra-slim look, this system often uses an embedded handle hidden within the wall. This looks incredible but limits you to internal locking only. If you require an external key cylinder, we must use a larger profile to house the lock, which slightly increases the visible frame.
For the 4600 Plus, yes. Any reputable local glazing company can replace a broken pane. For the COR Vision Evo, the glass is structurally bonded to the frame. A breakage usually requires specialist manufacturing and a much more complex repair process.
The 4600 Plus is highly recommended. The lever handle does the heavy lifting, resulting in a zero-friction, effortless glide. The COR Vision Evo requires manual pushing against the seals, which can be difficult for children or the elderly if the glass pane is near its 200kg manual limit.
We are not just resellers or middlemen. We fabricate these Cortizo systems in our own Irish workshop. This means we control the quality, the manufacturing tolerances, and the final installation, ensuring you get the exact right product for your home's unique orientation.