Utilicore is a lighter-weight insulating material than Needled E Glass, coming in 5 densities between 1-5 PCF. It has better low-temperature insulating properties with a K value of 0.21 at 75F. Utilicore is easier to handle and sew through than Needled E Glass and is available in thicker double rolls. Sample materials can be ordered from Dave Cox in both 10 foot sections and 12" x 12" hand samples.