Single thread screwjacks are typically used on timber roof vents on a pitched roof of a conservatory or orangerie. The brackets can be used in either direction depending on the frame dimensions you are fixing to.
These screwjacks are typically quicker to wind open and closed compared to the telescopic (twin thread) version.
£ 39.50 (£ 32.92 ex VAT) each £ 35.56 (£ 29.63 ex VAT) per unit for buying at least 5
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