Truth Window Support Arms

Truth casement window support arms. Truth Anderberg 88ss series window support arms. Available in a variety of sizes.
Pushing the vent open to the full extent of the support arms will automatically engage the arms. The vent should always be secured in the open and latched position by engaging the lock levers on each arm. To reclose the vent from the secured location, rotate the locking levers on both arms to the unlocked position, then push the vent outward to disengage the support arm latches. Even pressure applied to the vent will ensure that both arms disengage together.