26-in. Wall Sleeve for Through-the-Wall Air Conditioners. Wall Sleeve for Air Conditioners. This wall sleeve for air conditioners is compatible with standard-sized units. Constructed from durable galvanized steel, it offers excellent resistance to wear, rust, dust, moisture, and UV exposure, ensuring long-lasting protection for your AC unit. Designed for straightforward installation and featuring a sleek appearance, this sleeve enhances both the functionality and aesthetics of your air conditioning system. Designed to work seamlessly with a wide range of devices and systems, ensuring adaptability for various applications. Constructed with robust and long-lasting materials, this product is designed to withstand regular use and provide reliable performance over time. Simple and Convenient Setup, Efficient Temperature Control, Dependable Safeguarding.