More than ventilation.
Better air quality influences how you live, work and sleep.
Fresh air to suit you
Open your skylight with one action. Manual or electric, at your pace.
Lower temperatures in summer
Hot air rises. It escapes through your ventilation window. Your space stays comfortable without air conditioning.
Fast renovation, no disruption
The PVC frame fits on your existing curb. No demolition work. No architect needed.
Ready in five steps.
Every installation follows the same proven process.

Step 1
Remove skylight
You remove the existing skylight from the curb. This takes an average of 15 minutes.

Step 2
Clean curb
A clean surface guarantees a perfect fit. No special products needed.

Step 3
Install PVC frame
The ventilation window is fixed to the curb. The pre-assembled hinges make this easy.

Step 4
Connect opening system
Choose a manual spindle or an electric chain actuator. Both are plug-and-play.

Step 5
Refit skylight
Your skylight returns to its place, now with a fully functioning opening mechanism.
Choose your ventilation window.
Available in more than 50 sizes. Always in stock for fast delivery. Measure the inside dimension of your curb. That is the size you need. Not sure? Our advisors are here to help.
How would you like to open it.
Every system works seamlessly with your ventilation window.
Built to perform.
Every component is chosen for durability, sealing and ease.
Robust PVC, 3 mm thick
Resistant to the elements. Does not deform in heat or frost.
Three insulating layers
Condensation is prevented. Your ceiling stays dry.
Flexible PVC seal
Windproof on all sides. No draughts, no noise nuisance.
Stainless steel hinges, pre-assembled
Do not rust. Move smoothly. Ready for installation.
| Ramen | U-waarde |
|---|---|
| PVC-raam standaard | 1,50 W/m2K |
| PVC-raam EP | 0,75 W/m2K |
| PVC-raam EP 25 | 0,75 W/m2K |
| PVC-raam iDome & iWindow (laag standaard) | 1,08 W/m2K |
| PVC-raam iDome & iWindow (hoog) | 0,49 W/m2K |
| Polyester raam | 0,32 W/m2K |
Hoe lager de U-waarde, hoe beter de isolatie. Een lager getal betekent minder warmteverlies en een lagere energiefactuur.









































