Features Heavy gauge galvanized steel construction. Use existing duct. Insulated with 1" - 1.5 PCF insulation. 1/4" x 1-1/4" gasketing. Most models shipped fully assembled. Thousands of models designed and installed. Welded construction. Quick installation. Custom options available. Documents & MediaAdapter Curb Extension Panel AssemblyAdapter Curb Attachment DetailsList of Unitary Packaged Units with Accessories Available Product Search Existing Unit New Unit Search Submittals