Goovilla Shelf Bracket, Heavy Duty Floating Shelf Brackets 4 inch Long, 6 Pack Brackets for Shelves, Black Coated Metal Wall Shelf Support Brackets with 1/5 Inch Thick and 160 lb. Load Capacity

I got the goovilla 4 inch brackets on amazon https://a.co/d/01Hf6mCJ

These were the ones I used Boards https://www.rona.ca/en/product/vizusolution-vizusolution-white-melamine-shelf-97-in-x-12-in-x-5-8-in-tab0953007-0953007 Brackets https://a.co/d/08YPKwsL