In present day sash windows, you happen to be more more likely to find a spring balance (or sash balance) program. This is the spring-loaded gadget which counters the pressure of gravity, in outcome holding your sash window open with no require for cords, pulleys and people metal counterweights.  "The https://customtiledesigninlondon48269.ourcodeblog.com/35719329/fascination-about-sash-window-draught-proofing