The Helios MF 100 is a versatile mounting frame designed to reduce the installation depth of M1/100 fans, making it ideal for use in thin walls, tight shafts, or confined bends. This frame also supports the installation of a drawcord switch (available separately) when required. For added flexibility, multiple MF 100 units can be connected together to achieve the necessary installation depth. It is a practical accessory for adapting fan installations to challenging structural conditions