Johns Manville's Mechanical Insulations Group is offering a new installation guide for its Spiracoustic Plus™ round duct liner system. The "whys and hows" of installation are discussed in detail, along with photographs and examples of typical round duct configurations, fitting types, and installation steps.

Tips for estimating Spiracoustic Plus material needed for projects are also provided.

For more information, go to www.jm.com.