Keystone 26-In. Wall Sleeve for Through-the-Wall Air Conditioners, Model # KSTSLV1

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- 26-inch wall sleeve to be used with through-the-wall air conditioners
- Install wall sleeve in pre-cast concrete or masonry walls up to 17.75 inches thick
- Wall sleeve to be securely fastened to wall opening before installing air conditioner
- Helps bear the weight of the air conditioner
- Helps insulate the air conditioner
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