（16.7×6.3×0.2cm）2 Pieces Casement Window Opener, Window Restrictor, Window Opener Without Drilling Blocks Open Window and Door Locks, to Adjust the Openness

General DescriptionStay safe with our casement window vent, designed to prevent windows and patio doors from accidentally opening due to gusts of wind. This safety lock system installs directly onto the existing handle without requiring additional screws. It allows you to adjust the opening angle to lock the window in different positions, preventing accidental closing. Suitable for casement and sash windows, made of wood or metal, this aperture is easy to install and protects your children and pets.Technical specificationsDimensions: 16.7 × 6.3 × 0.2 cmMaterial: steelQuantity: 2 piecesUsageAllows you to adjust the opening of windows and prevent accidental closing.Ideal for casement or sash windows, made of wood or metal.Prevents Drafts and gusts of wind cause your windows to slam.