Keystone - 10,000 BTU Slider/Casement Window AC - KSTSW10B Cooling Area_350-sq. ft. while stainless‑steel exterior and aluminum

while stainless‑steel exterior and aluminum interior deliver commercial‑grade durability

Check Flame Quality: Ensure consistent blue flame

Keystone Energy Star 10

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Flexible Placement: Wheels and compact design let you move cool air where needed — great for rental homes or multi‑room use

Keystone - 10,000 BTU Slider/Casement Window AC - KSTSW10B Cooling Area_350-sq. ft. while stainless‑steel exterior and aluminumKeystone 10,000 BTU Slider Casement Window AC KSTSW10B The Keystone 10,000 BTU slider casement room air conditioner is perfect for cooling your rooms up to 350 sq. ft. Designed specifically for horizontal slider or casement windows this unit is the perfect solution for homes without traditional double hung windows. 3 fan speeds and a 4 way air direction control means you can quickly cool your room or maintain comfort where needed. The unit also comes