Hardware for Windows


Bildau & Bussmann generally sources handles from GreenteQ, Hoppe, and Franz Schneider Brakel (FSB). This allows them to offer a vast variety of colors, styles, and finishes.

Outside of the brands mentioned above, we can also work with you to use any other compatible handles. This includes custom made handles, historic re-creations, and smart devices. Please contact us for more information.

Greenteq Hardware Examples Image


GreenteQ Stainless Steel Handles are included in the base price for Bildau & Bussmann windows and doors. GreenteQ offers quality, short lead times, and modern aesthetics. GreenteQ prides itself for being design oriented and providing comprehensive and consistently high-quality handles.

GreenteQ Window Handle Catalog

Hoppe Hardware Examples Image


Hoppe is the market leader throughout Europe, considered to be the classic German handle, as it is ubiquitous throughout German homes. Hoppe develops, manufactures and provides handles made of aluminum, brass, nylon and stainless steel. They carry a wide variety of options, ranging from modern and colorful to traditional designs.

Hoppe Window Handle Catalog

FSB Hardware Examples Image

Franz Schneider Brakel (FSB)

Franz Schneider Brakel is our premium option for handles. FSB originally started in 1881 in Iserlohn, Germany as makers of antique-style cabinet fittings and devotional items in brass. It was in 1909 that Franz Schneider re-located to Brakel and thus began FSB. As a highly specialized boutique shop, FSB hardware was at the forefront of transforming handles from utilitarian items to elements of design at the turn of the century. Today, FSB handles are high-end designer handles with contemporary and traditional designs made of brass.

FSB Window Handle Catalog

Special Hardware


A limiter is a mechanism that is installed to prevent a casement from opening beyond a specifically designed angle or a slider from opening further than designed.

We currently offer NYC approved sash limiters.

Overhead Sash Operator

Overhead sash operators are available for hopper windows that are out of normal human reach. These are an analogue system that allows you to open these windows from eye level with ease.

Aluminum Sills

Aluminum window sills may be requested as part of your window package. As part of your order, we will match the color of the aluminum-clad to the sill. Aluminum sills are installed on site and come as separate pieces for each unit.

Electronic Operation

For hopper windows that are too high to reach, or simply as part of your desired design, we can include electronic strikers that will operate windows automatically. These can be connected to a wall switch.

FSB Hardware Examples  Image

FSB Hardware Examples

Hoppe Hardware Examples  Image

Hoppe Hardware Examples

Greenteq Hardware Examples  Image

Greenteq Hardware Examples