Abstract: A heat-insulating connecting member has a warm metal profile, a cool metal profile extending parallel to and spaced from the warm profile, and a pair of parallel and spaced insulating strips bridging the profiles and defining an insulating compartment therebetween. One of the strips is formed with a web projecting generally across the compartment and having an outer edge adjacent the other strip. An infrared-reflecting foil is secured between the web and the warm profile under tension at a spacing from the warm profile between the outer end and the one strip.