From Yale Locks, the P9401 Door Viewer in chrome offers a simple, practical way to check who is at the door before you open it. Designed for wooden, full panelled external doors, it adds an extra layer of everyday reassurance for homes where you want a clearer view of callers. An adjustable design allows it to fit a range of door thicknesses from 35mm to 57mm. This is achieved through a tubular casing and a screw lens, helping you tailor the fit to your door for straightforward installation and use. Key features Suitable for wooden, full panelled external doors Helps you identify callers before opening the door Adjustable to fit door thicknesses from 35mm to 57mm Tubular casing with screw lens for adjustment Chrome finish Model number: P9401 Please note: Colours shown are as accurate as possible, though may vary slightly depending on your screen settings.