26 In. Wall Sleeve for Through-the-Wall Air Conditioners - Keystone KSTSLV1 The Keystone 26-inch wall sleeve for through-the-wall air conditioners should be securely fastened within a wall opening before installing the air conditioner. The sleeve helps...
26 In. Wall Sleeve for Through-the-Wall Air Conditioners - Keystone KSTSLV1 The Keystone 26-inch wall sleeve for through-the-wall air conditioners should be securely fastened within a wall opening before installing the air conditioner. The sleeve helps...