Installation frame
The installation frame has to be stable, flat and square. Installation is possible on steel, stone or concrete. Find the dimensions of the installation frame here.
![Installation frame sizing](https://www.rolflex.com/en/wp-content/uploads/sites/6/2020/09/installationframe-sizing.jpg)
![Detail montageframe Compact](https://www.rolflex.com/wp-content/uploads/sites/6/2020/09/detailafmetingen-229x300.jpg)
Lintel
A lintel is not necessary for installation of the Compact door. To protect the door against weather influences, a lintel can be added. The top seal needs a surface to close.
Treshold
We recommend adding a treshold when the door has to be fully waterproof
![Treshold](https://www.rolflex.com/en/wp-content/uploads/sites/6/2020/09/treshold.jpg)
![Zijaanzichr waterkering](https://www.rolflex.com/wp-content/uploads/sites/6/2020/09/zijaanzicht.jpg)