Screw fit. Double locking. Made from metal/plastic. One hand locking/opening mechanism. Size (H)78cm (installed height). Fits opening from 72-78cm wide. Free Lindam safety accessory pack (RRP GBP9.99) via in-pack leaflet (GBP4.00 P&P). The Lindam House Safety Kit contains a selection of 17 locks and guards to minimise the hazards in your home. Pack includes. 1 x Door Stopper. 1 x Multi-purpose latch. 4 x Corner Cushions. 4 x Socket Covers. 1 x Appliance latch. 6 x Cupboard and drawer catches.