Interlam's new Screens come in a variety of colorful geometric patterns to suit a structure’s design needs. Each screen's core comprises one of two materials: an extruded PVC called Celtec or an exterior-grade MDF product. Celtec is lead- and heavy-metal-free with a density designed for stiffness, durability, and screw and staple retention. The U.S.-made material meets UL94 5V and UL 1975 standards, and uses a closed-cell structure for low water absorption. The screen’s exterior surface is made of a treated MDF called Extira that resists moisture, rot, and termites. Many of Interlam's screens also support LEED credits.