Need help in finding a foam?

[hanau]

Anyone know what type of foam this is or where I can find it?

 

[RBcarving]

Its open cell polyurethane/polyester air filter foam. See info here : https://acoustafoam.wordpress.com/2013/12/04/filter-foam-a-breath-of-fresh-air/
You can find it and HVAC places, hardware stores, Amazon, etc

 

[hanau]

Thanks for the help and link