Part # HSP-4TG
This is a 4 step aluminum ladder with a shelf. Great for around the house or for commercial use. You can see them here on tricam’s website.
http://tricamindustries.com/products/household-step-stools/skinny-mini/
I can’t find the 4 step stool on amazon, but the 3 step one goes for $70.
I have 2 of these used, they have some scratches on them but are in perfect working condition. Asking $40 each, or $70 for both.