M-D Gray Foam Weatherstrip For Air Conditioners 42 in. L X 1-1/4 in. T

Air conditioner foam weather-strip that easily compresses to seal out air, dust and insects. Use to seal gap between window sashes or between window sash and air conditioners.
Resilient, open-cell foam tape
A compressible strip for sealing out air, insects and dust around window air conditioners
Cushions vibrations