We do not ship to post office boxes within the contiguous U.S.

Visit the Contact Us page for details on how to contact a customer service representative.

No. We currently do not ship overseas at the moment.

If you are tax-exempt, please select the tax-exempt check box at checkout, and email your tax-exemption certificate to info@isi.supply. Please note, your tax-exempt order will be processed after your paperwork has been reviewed and approved. We do not refund for taxes collected if you do not select tax exempt and the orders has been shipped.