The GRI 4473-BL switch set is designed for wooden, vinyl, or aluminum doors and windows. It features a 3/4" switch paired with a 3/8" magnet, both recessed for a sleek look. Installation is easy with a press-to-fit design. The set is hermetically sealed to resist environmental damage, and plated contacts help prevent sticking or freezing. For added convenience, longer leads, zip cords, or jacketed cables are available on request. The switch and magnet components can also be purchased separately. A stubby version is offered as an alternative option. Upgrade your door or window security with this reliable switch set today!