A:AnswerGood morning Redblaze,
Yes, you can purchase extra shelves. Please contact our customer service team at 855-531-4808 and we can help you with purchasing extra shelves..
Thank you,
A:AnswerGood morning,
The 16 and 18 cu ft comes with 4 universal casters plus 2 adjustable supports. The 15.5 cu ft comes with 4 adjustable legs. Casters are not an available option on the 15.5 cu ft, but, you can remove the legs and add single-way wheels or universal castors if you choose to change them out.
Thank you,