Matte Black Passage Handle 63mm | Nidus Lonsdale SeriesThe Nidus range of door hardware delivers on quality and style. The Lonsdale Square Passage Set is ideal for hallways and non locking doors and comes complete with everything you need to install and use this door handle, including the latch. The 63mm rose size is perfect for when you already have an existing 50 54mm hole in your door.