Telescopic screw jack openers feature a twin thread mechanism with an inner and outer thread that extend and close together. That means they can be used to open and close heavy windows and vents. At Rocburn we offer telescopic screw jacks made from brass and chrome with various opening distance options.
Our range includes the brass telescopic screw jack with 150mm thread and large brackets provided for affixing to your window frame. The 150mm thread provides for a maximum distance of travel of 166mm. Once set the screw jack also acts as a lock on your window so it cannot be forced open from the outside.
For more on the ST706-150-LB Telescopic Screw Jack in Brass just contact us.
