I have a small sealed enclouse under the backseat of my 04 f150 supercab! i feel that the sub is in just barley to small of an enclousre and i want to throw some polyfill in it! i have a few very newb questions! 1) what is it. 2)where can you get it for the best price 3) whats the best way to do this (just have it pushed in there or mount it to the walls?) any replys would be great!

 

poly fill is polyester filler like the stuff in pillows and blankets the rule is 1lb of poly fill per cubic foot of air space, and just stuff it in nothing fancy, also you can buy it at a stereo shop for way to much or go to any fabric store or walmart and get it in the fabric section cost about 2.50 for 20 oz.