Durable, lightweight aluminum sandwich board signs are composed of two .012″ aluminum sheets with a polyethylene core, resulting in a total thickness of 1/8″(3mm). Suitable for both indoor and outdoor use, they are produced using UV inks on pre-painted white or brushed silver signs with optional drill holes for easy attachment to posts, fences, or surfaces. Their supreme durability makes them ideal for long-term use in healthcare, manufacturing, and parking facilities.