Number of Chain openers per vent

Minimum window height for full 250 mm travel of D35030 = 500 mm

Minimum window height for full 380 mm travel of F35032 = 900 mm

Travel on window below the minimum stated to be restricted to 30% of the window height.

For safety reasons side support stays should be fitted to all bottom hung windows.

Use only the W35127 or E35057 operators with the F35032 ( 380 mm) travel chain opener.

For bottom hung applications you must fit the H35034 fixing kit ( sold separately)

Type of Operator

Maximum control run 

Operator W35127   30 metres

Operator H35060    18 metres

Operator E35057    18 metres

The figure used in these charts are based on window with 4 mm double glazed units fitted with butt hinges or free pivots,no friction stays.

Please refer to our sales or technical department for advice if friction stays are fitted.