U: 1.08 W/m²K
Composition of the roller shutter
Built-on roller shutters are pre-installed on the window frame and fitted as a whole unit. The box and guide rails are fixed to the window and door profiles, resulting in a seamless connection to your external joinery. This ensures a minimum of draught, which makes this roller shutter the best option for a maximum of airtightness.
Wilms is the developer and sole manufacturer of the built-on roller shutter with integrated ventilation grille, a variant of the standard built-on roller shutter. Maintenance services and repair work to both standard built-on roller shutters and those with an integrated ventilation grid are easy and quick.
Built-on roller shutters also offer aesthetically more advantages than built-in roller shutters.