Our acrylic letters with embedded LEDs are 100% waterproof. That also means that they are absolutely maintenance free! Once installed, the sign is protected against all kinds of weather and does not require any monitoring, maintenance or inside cleaning. That is why they come with a UL-label marked "suitable for wet locations".

Our letters are water and air-proof, so there is no risk of any particles getting inside them and creating dark areas. Ugh, don't you hate it when that happens?

Each Kalisign illuminated sign also comes with its Meanwell brand IP65* rated power supply. 

*IP65 standard: "total protection against dust and water jets from all directions at the lance (22.5 mm nozzle, 12.5 l / min)."