ACCENT MADE. FORTRESS™ LIGHT. FortressAccents is a complete line of Post Caps, Post Base Covers and LED lighting accessories for decks, patios and other outdoor spaces. Raising the bar, FortressAccents’ die-cast aluminum housings and premium powder coat translate into optimal performance and durability. Its innovative design uses the same Post Cap for both lit and non-lit caps and is transformed with a simple optional waterproof drop-in LED light kit that emits a soft ambient glow at night. FortressAccents boasts a unique built-in thermal management system and also offers a power supply option with integrated timer, dimmer and photocell.