Dolly PSU suggestions?

Hi I am building a Dolly and now i cant figure out which psu to use, can someone post a link of a good psu with cover.
Thank you

Hi H_S,

You want a psu that provides either 12 or 24V with at least 20 amps. Because household current varies from country to country, it is not straightforward to specify one solution for everybody. Tom does have a BOM:

Parts List

I buy them from Zyltech either 12V or 24V they are 30 A and have a switch on the side to be either 115 or 230V