Reflects heat back inside during winter and keeps it out during summer, making it ideal for mixed climates.

Thick (up to 15 mil) clear film designed to hold glass together if shattered, deterring break-ins. 2. Buying Guide: DIY vs. Professional Go to product viewer dialog for this item. Gila Heat Control Window Film

Best for bathrooms or entryways where you need 24/7 privacy. These typically don't block much heat.