25kg Harder Filler

is likely a term used to describe a type of filler that dries to a harder and more durable finish compared to standard wall plaster fillers. These fillers are often used for repairing larger holes, deeper cracks, or areas that require extra strength and durability. Here are some features and uses of harder fillers:

1. Strength and Durability: Harder fillers are formulated to provide a stronger and more durable repair compared to standard fillers. They can withstand greater stress and are less prone to cracking or crumbling over time.