dormakaba 6400 / 6401 Narrow Commercial Plate Furniture
https://cdn.prod.website-files.com/69fd47b6fd25e9b4c1f02fce/6a7928015f18ceb2ba029857_6400-30.jpeg
Made from 316 grade stainless steel, the narrow stile furniture is designed for use with dormakaba short backset mortice latch and similar products.
The 6400 series is a square end design, is constructed from 316 Grade stainless steel, and is supplied with a 30G lever.