The U Values for the RX15 steel door have been calculated to EN 673, EN ISO 10077-1 and EN ISO 10077-2. As standard, all RX15 doorsets have an insulated core.
A standard 45mm RX15 with foam core is 1.7 W/(m²K)
The rest of the range is 1.8 W/(m²K). Please contact us for more details.