1、STURDY CONSTRUCTION: The water tank is made of LLDPE material, meeting food grade requirements and drinkable water standards. It is also shockproof, impact resistant, heat resistant, and cold resistant, suitable for use in temperatures ranging from ‑40 to 80 degrees Celsius. 2、SEAMLESS DESIGN: The water holding tank adopts a seamless integrated molding process, ensuring the tank's sealability, preventing leakage, and facilitating storage and transportation with its square exterior design. 3、VERSATILE APPLICATION: The water tank features a smooth and sealed exterior, allowing for easy customization with hole modifications to fit your specific vehicle or usage needs. 4、LARGE WATER INLET: Equipped with a 130mm wide inlet with double layer guard of sealed and outer covers, the water tank allows for quick and easy filling of 18.5 gallons of clean drinking water, ideal for daily use or outdoor camping. 5、WIDE COMPATIBILITY: Suitable for various applications including RVs, trailers, outdoor camping vehicles, ships, and yachts, the water tank provides ample storage space for fresh water, perfect for both recreational vehicles and household water storage.