Manufacturer of clock-spring balances to replace rope-&-pulley systems in traditional windows: several models for residential & commercial use; previously manufactured by Caldwell Mfg.
Indow
Enjoy modern comfort while preserving the charm of your original windows with Indow. Indow window inserts press inside your window frames without a mounting bracket to give you all the comfort and efficiency of high-end replacement windows. Indow inserts have the lightest touch, both structurally and aesthetically of any window insulation solution and are perfect for commercial and residential settings.
