The Helios BM 250 pipe clamp connectors are designed to securely join fans to 250 mm diameter circular ducting. Supplied in pairs, these clamps feature integrated anti-vibration foam to reduce noise and mechanical transmission between the fan and ductwork. Engineered for a quick and reliable fit, the clamps easily fasten over ducting and fan spigots. As part of a versatile range covering sizes from 180 mm to 710 mm, the BM 250 provides a practical and efficient connection solution for various ventilation applications.