Remsafe Window Block Lock BLD-01-WHT Window Block Lock is a versatile safety lock for sliding and sash windows. Window Block Lock Function - allows the resident to lock the safety device in position, and then open and close the window to that position without using a key to lock and unlock each time. Versatile safety lock for sliding and sash windows. An ideal alternative to existing window safety devices for installations with limited window sill or where the sill is greater than 4 mm thick. Suits: Sliding aluminium Double hung Sash New legislation was passed in March 2013 by the NSW Government to prevent children falling from windows. All windows above the ground floor in any existing residential strata schemes must be fitted with a lock or safety device which prevents the window opening more than 12.5 cm by 13th of March 2018. The Building Code of Australia which made window safety devices compulsory in new residential buildings from 1 May 2013. Features: Easy to install Reversible stop bracket allows window to be restricted or opened to its full extent Suitable for horizontal or vertical sliding windows Versatile alternative where minimal window sill limits installation options Keyed alike across the product range Australian owned and designed Independently tested to comply to NSW legislation Extended stop plates are available Complies with safety requirements under the Strata Schemes Management Act 2015 (NSW) Child resistant release mechanism allows the window to be opened to its full extent if required Specifications: Finish: White