Searching for a deadbolt

[Mister Banks]

I want to improve the security of my main door by adding a double locking single cylinder deadbolt but I can't find any suppliers, does anyone know of any suppliers that meet this criteria? It needs to be double locking as the internal housing could be accessible through the doors letterbox, although only by someone with very thin arms.

Thanks for any assistance.

 

[crank39]

Timber door, uPVC, aluminium? Mortice lock or Yale type preference?

Unless your letterbox is the size of a cat flap or you have arms like Mr Tickle then......

 

[Mister Banks]

Further investigation has lead me to a 5 lever mortice deadlock. ERA do a number of options that look to fit the bill.

 

[Mister Banks]

Timber door, uPVC, aluminium? Mortice lock or Yale type preference?

Unless your letterbox is the size of a cat flap or you have arms like Mr Tickle then......

Thanks, Its a timber panelled door but with a window to one side. I just need something I can lock from the outside when no one is in the house.