Inside Dimensions - S ( 21"long x 13"high x 3.5"deep ), high elasticity which can cover 19-21"long x 11-13"high x 2.5"deep. Fits Most 3,000 - 7,000 BTU Window Air Conditioner Unit
1. Poly lining and outer cover are sewn together for double insulation.
2. Machine washable cover made of quilted poly/cotton material.
✔️Reduce heating costs during winter, no need to remove and reinstall A/C unit
✔️Breezy Installation completely in one step with elastic straps. Minimum Assembly, Sturdy, and Convenient
✔️Stop cold air drafts from entering through air conditioners, cover inside window-mounted air conditioning unit