The SL-20 FRP Door is constructed as tough as the SL-17, but with a softer, smoother appearance. The SL-20 is strong, yet aesthetically pleasing with its exclusive, exterior-grade sandstone-textured FRP (fiber reinforced polyester) surface finish. Tough enough for your entire high traffic exterior entrance locations, but also attractive enough to complement indoor spaces. The SL-20 has the same durable construction as the SL-17 for long life and low maintenance and is available in many prominent architectural through-colors.
At the Core of our Door’s Strength is our Door’s Core
The poured-in-place polyurethane core of our SL-20 is not just a passive filler — it’s a functional component that contributes significantly to the durability of Special-Lite Doors. After the door has been completely assembled, the core material is injected using our proprietary foam injection technology, ensuring a complete fill. This strong, lightweight, structural polyurethane foam bonds firmly to the rails, stiles, reinforcements and face sheets to transform the door into a solid, completely sealed unit with incredible impact resistance and flexural strength. Our polyurethane foam won’t absorb or be damaged by water.