“42″ x 74″ Dielectric Mirror – 5/32″ (4mm) Thickness – Polished Edges” has been added to your cart. Continue shopping → 40″ x 40″ Dielectric Mirror – 1/4″ (6mm) Thickness$2,600.92 40" x 40" Dielectric Mirror - 1/4" (6mm) Thickness quantity Add to cart Category: customer-added