I have made a purchase of a bath bar lighting item and the glass broke on our way home.
How can I purchase new glass for he item?

SKU# 586285
Bar code 9475309004
White finish
White glass shade
24W X 4.5 in H X 4.75 in Ext.

Where did you buy it, Home Depot? Ask them to order it for you or to check their replacement stock.