Telescopic Screw Jack Manual Window Opener For more details on the popular Twin Thread Telescopic Window Screw Jack for Skylights, click Here A well made and easy to fit screw jack where the bracket detaches via release pin for easy installation . Solid brass screwjack, used for securing a window that may not be reachable by normal means. Perfect for skylights and other high up windows such as Velux windows. Solid high quality construction. Screw hole distance when closed 95mm. Screw hole distance when extended 290mm This window screw jack is ideal for high level windows, vents, flat roofs, skylights and conservatories. This tool is designed for higher surfaced windows which are out of reach, the mechanism provides a winding operation which opens the windows easily with the use of a handle. The screw jack can be used to keep the opener from being forced by locking into place. WindowParts are off...
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