Standard load: S/K-90, s/k-110, S/K-150
Heavy Duty Load: HD/K-90, HD/K-110, HD/K-150
Heavy duty load: XHD/K-90, XHD/K-10, XHD/K-150
Standard galvanised steel lintels. All Keystone standard lintels satisfy the thermal performance of all UK building regulations.