DuraVent DuraFlex Pro 4" x 120' Stainless Steel Custom Length btu38500 Use with the tee cap 3100H EL ETIS WH Use with the tee cap Ideal when using multiple heaters to set up zones for a variety of simple or complex applications Infinite Heat Control Use Any Switch Solid State Control Packages work in conjunction with Infratech’s Analog Controllers Only Timer Analog Controllers are offered with or without Digital Timers Remote Dimming Zoning Capabilities Smart Phone Tablet Application NEMA Rating NEMA 12 Analog NEMA 4 Panel Wiring Diagrams Provided Tested Before It Leaves The Factory Assigned a UL Listing Number Panel Built Job Specific Enclosure Rating Type 1 (must be installed in a protected location) Face Plate 19 Subject to the limitations set forth below For purposes of this warranty