Standard galvanised steel lintels. All Keystone standard lintels satisfy the thermal performance of all UK building regulations.
Standard load: S/K-90 WIL, S/K-110 WIL, S/K-150 WIL
Heavy duty load: HD/K-90 EIL, HD/K-110 WIL, HD/K-150 WIL
Heavy duty load: XHD/K-90 WIL, XHD/K-100 WIL, XHD/K-150 WIL
Extra heavy duty load: CFS/K-90 WIL, CFS/K-110 WIL, CFS/K-150 WIL
Extra heavy duty load: XCFS/K-90 WIL, XCFS/K-110 WIL, XCFS/K-150 WIL
Extreme load: X/K-90 WIL, X/K-110 WIL, X/K-150 WIL