Manufacturers sometimes mark windows and doors with their brand different from other manufacturers. Finding the information for your window or door when you are trying to get replacement parts, or you want to match the existing can be frustrating if you don’t know where to look. Start by looking for a sticker or it may be etched into the product. Here is a couple of places to start looking. 1. Window Identifying tag (manufacturers started placing these on the frame of the window more recently) 2. Check the glass- sometimes it may be etched into the glass itself or you may find it on the spacer between the glass panes. 3. Handles 4. Locks 5. Hinges If you are not able to find it on your own, contact your local window expert to help you.