Certificates

Single solid steel doors  CE marking U-3
Double solid steel doors CE marking U-4
Frost-resistant steel profile door  DD_CE_marking_K-2
Frost-resistant steel profile door  DD_CE_marking_K-3
Certificate for type TK-01 steel profile doors of E-60 fire resistance class
Certificate for type TK-03 steel profile windows of El-60 fire resistance class
Certificate for type TK-04 steel profile windows of EI-30 fire resistance class 
Certificate for type TK-05 steel profile doors of EI-30 fire resistance class
Certificate for type TK-06 steel profile doors of EI-60 fire resistance class
Certificate for types TU-07 and TU-06 fire resistant steel doors