Got an old casement window that won't stay open? This solid brass adjuster is made for vintage-style casement windows and lets you set the sash at a 12-inch opening—great for getting some fresh air without the window swinging shut. The brass construction looks classic and won't rust easily. Installation is straightforward; just replace your old, broken adjuster with this one. It's a simple, durable fix to restore function to your older windows. Keep your home ventilated the old-school way.