Should also add guides are also bolted to brackets, they seem very sturdy, so support for roller door runs the entire vertical length not just above part lintel
Sorry not 40mm 40cm either end, type in original posting. Although its not built yet so can increase if required.
I think it would be ok but open to other opinions?
Hi,
Im building a boiler house which will only be 1 metre deep but is 5 metre wide and needs a vertical roller door to allow access to the boiler and and the remaining space. Walls with be single block 4 inch thick.
I have purchased a 5 metre 10cm standard steel lintel to fit across the...