Superl’s professionals do all types of firestopping such as wood frame construction penetrations, including electrical, AC line sets, plastic vent pipes and water lines, through fire rated floor/ceiling assemblies and gypsum walls. email info@superl.net Corporate Headquarters 7301 Apollo Court, Lino Lakes, MN 55014 Phone: (763) 571-7464 Fax: (763) 571-7646