EASY TO INSTALL: The U shape window ac foam block is easy to use and install. You can effortlessly cut the foam block with a knife to fit the size of your opening size (knife not included).

EASY TO INSTALL: The U shape window ac foam block is easy to use and install. You can effortlessly cut the foam block with a knife to fit the size of your opening size (knife not included).

EASY TO INSTALL: The U shape window ac foam block is easy to use and install. You can effortlessly cut the foam block with a knife to fit the size of your opening size (knife not included).

EASY TO INSTALL: The U shape window ac foam block is easy to use and install. You can effortlessly cut the foam block with a knife to fit the size of your opening size (knife not included).

EASY TO INSTALL: The U shape window ac foam block is easy to use and install. You can effortlessly cut the foam block with a knife to fit the size of your opening size (knife not included).