Working with Roxul insulation is a breeze. It cuts quickly and accurately with a serrated knife so you can easily achieve optimal fit around obstructions ... and between studs and joists that are less than standard width. Insert. Compress. Release. Those three simple steps are all it takes to get a snug fit, which is one of the reasons why Roxul ComfortBatt delivers maximum R-value and energy savings. For additional information visit www.roxul.com.