The 2 Part H Section Base for 2–5mm Boards is a durable panel joining profile designed to create strong, professional joints between thin boards, cladding panels, and sheet materials. The base profile is fixed into position before the panels are located, with a compatible barbed H Section Top push-fitted to create a secure, permanent connection. Manufactured from UV-stable rigid PVC, this profile is suitable for both internal and external applications, offering excellent resistance to moisture, weathering, and corrosion. It is ideal for wall cladding, signage, display systems, shopfitting, vehicle fitouts, and lightweight panel installations. Compatible with both the Small (ER141) and Medium (ER144) 2 Part H Section Tops, this system provides a neat, secure, and professional finish.