“20″ x 30″ Dielectric Mirror – 5/32″ (4mm) Thickness” has been added to your cart. Continue shopping → 30″ x 74″ Dielectric Mirror (tempered) – 1/4″ (6mm) Thickness – Polished Edges$5,389.85 30" x 74" Dielectric Mirror (tempered) - 1/4" (6mm) Thickness - Polished Edges quantity Add to cart Category: customer-added