40-138 key hole size

Question

What is the size of the square key hole? I need a knob similar to picture only with a 1/4" square hole. Can you help?

Dave Sr. · Accepted Answer

The 40-138 does not have a key hole, I'm afraid. The key cylinder is no longer available. If you want a key lock for you storm door, take a look at our 40-034K instead. It has the same 1-3/4" hole centers as the 40-138, though you will need to drill a hole for the bottom end of the handle.