General description These adjustable sliding double window locks are designed to enhance security for heavy doors and windows. Made from durable aluminum alloy and featuring stainless steel screws, these locks provide a solid and sturdy solution for safeguarding your home. They allow windows to be partially opened for ventilation while preventing unauthorized access and ensuring the safety of children. Technical specifications Material: Aluminum alloy and stainless steel Dimensions: 6 x 2.54 x 2.4 cm / 2.36 x 0.95 x 0.95 inch (LWH) Applicable track height: Greater than 1.2 cm / 0.47 inch Maximum thickness: 1.6 cm / 0.63 inch Quantity: 4 pieces Installation No additional tools required for installation Each lock includes a hex key Locks are secured on the track by a keyed control Usage Suitable for horizontal and vertical windows Can be applied to sliding glass doors Not compatible with plastic window frames Enhances air circulation while providing security Other information Package