Efficiently isolate external air with this portable air conditioning seal, enhancing cooling / heating while maintaining stable indoor temperatures Includes user friendly installation tool, ensuring a snug fit that withstands weather changes and repeated use Ideal for renters, homeowners, or anyone using portable units requiring quick insulation solution without permanent installations double opening window seal cover features waterproof fabric for tear resistant durability and breathable, suitable for various window frames Perfect for apartments, offices, or dorm rooms to seal gaps around window mounted air conditioners and energy loss year round