A powerful ½ HPc* DC motor allows for quiet operation. | Operates residential sectional doors up to 8 high and up to 350 lbs. in weight. | Steel-Reinforced Belt or Chain Drive: Choose the drive option that best fits your needs. | Strong C-channel Rail design that also helps conceal rotating belt or chain for better aesthetics. | Auto-Seek Dual Frequency system automatically seeks either the 315 or 390 MHz frequency produced by the remote, depending on nearby frequency inferference. | Light positioned toward inside of garage instead of garage door to give illumination where you need it most. Compatible with most CFL and LED light bulbs. | Pre-programmed remote is ready to use out-of-the-box. (Simple steps to change programming if desired.) |