They are made by Akro-Mils, who appears to be alive and well and still cranking them out. They are on Amazon, HD and the usual suspects The web site is: akro-mils.com and the phone number is: 800-253-2467. You used to be able to order replacement drawers and packages of drawer dividers. I would guess you still can. Rather than playing hit or miss to find the size you need, go to the source. I have a whole bunch of those cabinets in various sizes. Measure your drawer and give 'em a call. They have been around forever.
Sent from my SM-G900V using Tapatalk