M-D Building Products Air Conditioner Weatherstrip – Open Cell – 2-1/4″ X 2-1/4″ X 42″

Air Conditioner Weatherstrip: A foam weatherstrip that easily compresses to seal out air, dust and insects. Use to seal gap between window sashes or between window sash and air conditioners.

Seals out cold air in winter and hot air in summer
Stops vibrations and noise
Provides a barrier to help keep out drafts and insects
Resilient, open-cell polyurethane foam tape
Easy to install