We have been making window security cages commercially for 33 years in Baltimore county Md! I have recently started doing residential. These are solid aluminum and strong mig welds, the frame is 8th inch thick angle with 8th inch mesh, if cages are over 60 inches we run flat bar across the middle from side to side for extra strength. Please message me and I can make any size and any amount you need and will deliver with in reason. They are great for office trailers,business, garage and home! They come with special screws with special bit so only you can take on and off. Cages will be priced differently based on size and amount . I will adjust prices just for you and we can customize your order through messages and will help with shipping if it’s a lot. If your local I will deliver. Thank you!