Raynor FireHoist FS fire door operators offer 1/3 HP, 1/2 HP, 3/4 HP, 1-1/2 HP, and 2 HP, planetary reduction gear-drive options, providing an integrated fire door control system. Featuring 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. The FS models are also available in 1/3 HP, 1/2 HP, 3/4 HP, 1-1/2 HP retro-fit options, designed to accommodate existing fire doors by eliminating all the components that typically fail.