At the Core of our Door’s Strength is our Door’s Core
The poured-in-place polyurethane core of our SL-19 door is not just a passive filler — it’s a functional component that contributes significantly to the durability of Special-Lite FRP/Aluminum Hybrid 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.