The door is not a Pella, but is a Cole Sewell Estate Series storm door that was already installed on my house when I bought it 8 years ago, so I don't know its actual age. ES332770 is the serial number. My guess is it is from the 1990's. The latch has a knob on the outside and a left facing handle on the inside. The lock is separate, above the handle bracket.
I've included a composite photo of the part(s) both in and removed from the door, with a ruler next to them for measurement.
Pella told me that their part number that would fit for a replacement was #20278307 . Unfortunately, they only have it in brass, and I would prefer a black handle set, so hopefully you'll have one that will work.
I actually do not need the latch part, as that works fine and I do have the key, but whatever comes with the kit is fine.
Thanks very much, I appreciate your help with this.
