The two standard types of folding opener give a window sash movement of 150mm (Type 110 & 112). The range is suitable for most PVCu, aluminium, timber and steel windows and are commonly used in schools, hospitals, commercial buildings and sheltered housing.

Type 110: For high level pole operation

The operating eye remains inside of the building making it easier to operate with a pole. Hand operation is not recommended due to the geometry of the opener, there is a higher risk that fingers can become trapped.

Type 112: For low level hand operation

The operating eye and tandem bar do not interfere with the internal cill boards. The position of its operating eye gives an extended arc of operation making it ideal for hand operation.

Caldwell offer many options with their folding opener range, if any of the options detailed do not fit your requirements, please get in touch with our sales office.

Technical Information:

Minimum sash height:

• When the sash is hung on friction stays: 400mm
• When the sash is hung on butt hinges: 250mm

Folding openers must be positioned between 100mm and 200mm from the sash corners.

The maximum distance between folding openers should not exceed 900mm

Qty required:

• X = 0 - 400mm           1 Opener
• X = 401 - 900mm       2 Openers
• X = 901 - 1800mm     3 Openers
• X = 1801 - 2700mm   4 Openers
• X = 2701mm +           Contact Carl F Groupco technical department

Tandem Bar Calculator:

Formulae for tandem bar lengths:

x = sash width - 300 (round up or down to the nearest 100mm)

Tandem Eyes

Pole operation of linked folding openers will require a tandem eye. The tandem eye should be fitted centrally in the case of two openers, or immediately to the side of the central opener in the case of three openers. There are two tandem eye designs dependent upon use:

262 Tandem Eye for use with Type 112 folding opener

Where an extended arc is required. Whilst the 112 folding opener is not ideal for pole operation, there may be applications where a tandem eye is required i.e. just out of reach. The 262 tandem eye is operated with a large boss operator.

263 Tandem Eye for use with Type 110 opener

To give an extended arc. It is operated with a small boss pole operator. If the folding opener is to be used at high level with a cill board, the required clearance must be accounted for.

Available in 200mm increments between 600mm and 1600mm. Other sizes available to order.

Accessories

Pole operator: standard length of 1400mm

Vent packers: To accommodate intermediate sizes. 3 sizes are available: 2mm and 3mm silver aluminium and 5mm black plastic.