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This more robust opener, with a much stronger closing force, has recently been added to our range. With the same unique action as the HD3200, but fitted with two upper arms and two strong extension springs. It is recommended for use on both aluminium and timber roof and top hung side vents, particularly lightweight polycarbonate glazed, in exposed areas to reduce wind snatch effect and provide increased resistance to wind flutter. Will lift up to 6kg (13lb) i.e. a vent weighting up to 12kg (26lb) - glass area not exceeding .65sq m in an aluminium frame - with a maximum opening of 35cm (14").
NOTE: PRICE INCLUDES A DISCOUNT OF 15% - SAVE £6.30
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