Yes! SpeedComfort works perfectly with (cast-iron) column radiators. You can use special mounting hooks to easily attach the fans underneath the radiator — even on older or traditional models. These hooks are available only in white and come in sets of two. You’ll need one set for a Mono, two sets for a Duo, and three sets for a Trio. When you order a white SpeedComfort set on our website and select that you need hooks, the system automatically calculates the correct number for you. That way, you’ll always receive exactly what you need — simple, tidy, and plug & play.