Doesn’t include cap. See photos for what is included. This Glow-Worm storage tank water heater is a great addition to any home. The brand is well-known for its high-quality products, and this model is no exception. Designed with a pitched roof slate, it is perfect for any home with this type of roofing. The heater is ideal for those looking for a reliable and efficient way to heat their water. Its large capacity ensures that you can store enough water for all your needs. This model is suitable for standard water heaters and is easy to instal. Get ready to enjoy a warm and comfortable home with this Glow-Worm storage tank water heater.