These are on the bottom of each drawer entry. Used to guide drawers straight and reduce side to side motion..
Tom from SWISCO responded:
April 22, 2020
I'm afraid that we don't have the exact drawer guide you show in your photos. Could you use something like our 32-083 or 32-114 instead? Look these over and let me know what you think.
A handy person from Missouri says:
April 22, 2020
No, the side width is necessary. Thanks anyway
Tom from SWISCO responded:
April 23, 2020
I'm afraid we don't have anything with that same vertical side piece. I am sorry that we cannot offer a better match.