If not welding a Kirncroft security door into a steel subframe, please follow the guidelines below:
Fitting into brickwork:
M8 x 50mm coach screw with 10mm rawl plugs.
Fitting into blockwork:
M8 x 50mm Coach screws with 10mm rawl plugs or M10 x 50 coach screws with 12mm rawl plugs.
Fitting into a timber frame:
M8 x 50mm coach screws or M10 x 50mm coach screws (no need for rawl plugs).
Fitting into lightweight steel frame:
No.14 (6.3mm) X 50mm self-drilling flanged hexagon tek bolts with a washer if required.
Fitting into a heavy-duty frame (such as support beams or steel angles):
M10 x 50 hex bolt sets.
(Please note that the length of the bolts and screws should be taken as a general guide and may not be suitable for every situation).