Replacement Keeper, Pacesetter
A home owner from California says:
December 20, 2012
This is a replacement for a Pacesetter patio door, but I guess they are out if business.
Tom from SWISCO responded:
December 21, 2012
Thanks for posting! Please take a look at SWISCO part number 89-027. This sliding patio glass door keeper appears to be a close match to what you have. Compare the dimensions to see if this can work as a replacement.