You are buying a Air Conditioner Foam Weather Seal, 1.1/4" x 1.1/4" x 42".

gray, open cell foam for weather-stripping around window air conditioners. 

A resilient, compressible strip for sealing out air, insects & dust.

1-1/4" wide x 1-1/4" T x 42" L

Please view all the pictures as they are part of the description.

Check out my Ebay store.

Thanks for looking.

Good luck.