Arc-Co Electrical Boxes & Fittings Manufacturer of Electrical Boxes & Fittings Since 1964.

Arc-Co has been an innovator by offering electrical boxes with Concentric Knockouts that give electricians on-the-job flexibility. We are now pleased to also offer Eccentric Knockouts in our 4 11/16” line of electrical boxes.

We can design and manufacture custom parts to meet your requirements. Most parts are also available in Stainless Steel. Stock products can be shipped anywhere in the world within 24 hours.