Use with the H35060 or the E35057 openers to open/close a single bottom hung , open-in window fitted with butt hinges.
Maximum suggested window opening 500 mm (1/3 of vent height). For vents wider than 1500mm two openers are necessary.
Minimum head clearance 20 mm.
For safety reasons we recommend fitting side support stays to all buttom hung open-in window