Need to install key lock on sliding glass door

A handy person from East Falmouth, Cape Cod says:
Hi,

Could you please take a look at the attached photo and help us figure out what type of key lock we could possibly install on this ca. 1980 sliding glass door. We can't find a maker's ID name anywhere on the door, but have found that the screen rollers are nearly identical to your part # 84-074- and we will order four of them, once we figure out what lock would work well.

Many thanks,
Elaine
East Falmouth, Mass.
A customer submitted photo of a door handle.
Profile picture of Dave
Dave from SWISCO responded:
Thanks for posting, Elaine. Please take a look at our 82-309 Key Lock Set, as well as our 82-035 patio door handle set and our 82-226 mortise lock. Do you think these might work for you? Please compare their dimensions to your own hardware to make sure.

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82-035 : Patio Door Handle Set, 3-15/16
82-035
Price: $23.74
Patio Door Handle Set, 3-15/16"
82-226 : Mortise Lock, 4-5/8
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Price: $13.45
Mortise Lock, 4-5/8"
82-309 : Key Lock Set
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Price: $15.49
Key Lock Set
84-074 : Screen Door Roller, 1
84-074
Price: $3.65
Screen Door Roller, 1" Steel BB Conc
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