This is a storm door mortise lock used by several manufacturers. It has a stamped steel mortise case solid brass trim plates and has brass plated diecast low profile handles. The lock cylinder is a solid brass double keyed 5 pin tumbler cylinder lock. It is used on 1 in. to 1-1/2 in. thick storm doors.

Prime-Line K 5130 Storm Door Mortise Lock with 5 Pin Tumbler
$48.81