Cabinet is heavy-gauge steel with white powder-coated finish. All-welded construction. Door has heavy-gauge steel with stainless steel channel frame. Secured to cabinet with an enameled steel piano-hinge and equipped with a magnetic catch. Mirror: No. 1 quality, 1/8" (3mm) select float glass, electrolytically copper-plated. Adjustable Shelves (3) — Clear plastic extrusion. Attach to cabinet by sliding into slots in sides of cabinet. 1 shelf will have holes on one end to accommodate up to 4 toothbrushes.