DuraVent DuraFlex Pro 4" x 120' Stainless Steel Custom Length btu38500 Ideal when using multiple heaters Spin A Fire Gas LP RAL 2012 49 24690 Powder Coat Top Finish Matte Black Base Finish 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 Ducted vent trim for front discharge using ducted Passive Heat (PHFR MCE 60) or (4) subject to negligence or any use not in accordance with the installation instructions included with the product as determined by DuraVent DuraTech® Premium