Simplex's Linar Series offers square edge panel, of various widths, profile with a "v" groove for interlocking the PVC filler strip. The interlocking filler will not become dislodged in negative pressure environments, which makes the Linar Series excellent for traditional exterior soffits, subways and train stations. The Linar Series' flexibility also allows for exciting architectural design with the benefit of a clean, durable, sound absorbing ceiling. Accessibility System can be supplied with an access door for easy access to the plenum. Panels Roll formed rectangular shapes, are available in a wide range of sizes - Contact us for more information (800-638-5726) or our Agent representative in your area for more details of this system capabilities and limitations. Curved: Please see curved panels section. Perforations Standard Un-perforated Aluminum. Finishes Select from Simplex Ceilings standards for Linar System. Please consult the factory Finishes link for more information. Fire Rating All metal pans and associated suspension systems are Class I, 0-25 Flame Spread, as tested in accordance with ASTM E84. For more technical details, please refer to our Architectural Specifications and/or Technical Data links. Contact us (800-638-5726) or our Agent representative in your area.