
CSTB France — 2018 — No. BV18.1042 tests according to NF EN 1026, NF EN 1027 and NF EN 12211 standards on a C23 type configuration (3 leaves).
Thermal calculations carried out with a UG=1.0 W/m2.K.
Achieve a perfectly seamless floor transition between indoors and outdoors. Our invisible threshold solution delivers a fully level surface across the entire opening, thanks to its recessed track and integrated flooring support system.
The flush threshold is ideal for projects where large openings will often remain open, creating a strong, continuous visual flow between inside and outside.






Discover detailed information about the W= range as well as technical cuts that will give you the reservations you need for your project.