Raynor FireHoist fire door operators are UL listed for use with Raynor FireCoil™ fire-rated doors, as well as for retro-fit applications where existing fire doors require new commercial door operators. All FireHoist operators provide automatic closing without the loss of spring tension and do not require a traditional mechanical resetting after testing. All units feature a high-efficiency gear reducer and horizontal front of coil installation, the FireHoist in-line offering is versatile and able to withstand the most rigorous environments. All operators feature an internal release device and governor system to control the automatic closing of the door. The compact low profile design ensures that no additional clearance above the top of the door coil is required, saving space. If an approved monitored reversing device is not connected, the operator will require constant pressure on the close button, to close the door. Available in a variety of horsepower options, Raynor offers helical, spur, and planetary gear drive systems. All models are c-UL-us listed and housed in a NEMA I enclosure.