Simplex's Curved Snap-In Series offer the same advantage as the Snap-In Series with is unique concealed grid snapping system, for the interior or exterior applications. For a low cost, clean, monolithic look, the Curved Snap-In is aimed for those looking for a quick installation and easy maintenance. Accessibility Interior Snap-In is 100% downward demountable. Exterior Snap-In can be supplied with an access door for easy access to the plenum. Panels Interior Snap-In: Brake formed square or rectangular shapes are available in a wide range of standard or custom sizes and radius, both concave and convex. The panels can be butt joints, have reveals or have beveled edges - Contact us for more information (800-638-5726) or our Agent representative in your area for more details of this system capabilities and limitations. Exterior Snap-In: Brake formed square or rectangular shapes with seared open buttons are available in a wide range of standard or custom sizes and radius, both concave and convex - Contact us for more information (800-638-5726) or our Agent representative in your area for more details of this system capabilities and limitations. Perforations A variety of round, square, rectangular, oblong, slotted and custom perforation patterns are available to meet your project requirements. Please consult the factory Perforations link for more information. Finishes Simplex Ceilings offers a wide range of finishes applied on aluminum or steel alloys. Simplex Ceilings has custom finish selections to suit every customer need. Please consult the factory Finishes link for more information. Acoustics Simplex Ceilings offers a variety of sound absorbing backing, each of which can achieve a N.R.C. (Noise Reduction Coefficient) value ranging from .55 to .96. Please consult the Acoustical link for more information. Fire Rating All metal panels 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.