Oberes Isolier mod.400 De Dietrich 7785669

The upper insulation mod.400 is a thermal insulating layer designed to minimize heat loss from the top of your heating equipment. Specifically for mod.400 models, it helps maintain consistent operating temperatures and improves energy efficiency. Proper insulation also protects surrounding components from excessive heat, extending the life of your boiler or burner. Replace worn insulation to keep your system running at peak performance.