Designed for heavy-duty applications, NB-500-LE-OPCON in-floor, springless, power open/power close door operator is rated for doors weighing up to 2,500 lb or operating torque of 1,000 lb-in. UL50 TYPE 4, In-Floor Underground Conversion is also UL 325 Listed. Product provides flexibility for heavier doors to resist stack pressure or wind loads, yet remain compliant with ANSI 156.19 when required. Stack Pressure Monitoring (SPM) is optional on all low energy models.
This story is related to the following:Door Operating Devices