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​​​​​​​Advanced Rolling Steel Service Doors 621

​​​​rolling steel door on building​​​

​​​​​​​​RapidSlat® Model 621

This advanced service door is best suited to situations and applications with weather extremes. For example, agricultural facilities in the Midwest would benefit from the door’s rugged construction and weather sealed jambs.​

Standard max width
up to 20' (6096 mm) depending on gauge and slat type

Standard max height
up to 20' (6096 mm) depending on gauge and slat type

Interior or exterior face of wall

Control panel
Variable frequency drive controller with self-diagnostics (time delay self-close timer and non-resettable cycle counter included); LCD readout, enclosure NEMA 4X rated

Interlocking roll-formed slats, end locks attached to prevent lateral movement Flat Profile type F-265 for doors up to 20' wide; 22 gauge galvanized steel

Curtain finish
Gray, tan or white PowderGuard® Premium powder coat with hardening additive

Bottom bar
Two PowderGuard® Premium powder coated black angles (min. thickness 3/16”) with 2-wire, self-monitoring, fail safe, electric sensing edge

24 gauge galvanized steel primed, black painted; interior hood baffle included

Min. ¼” hot rolled primed, PowderGuard® Premium powder coated black steel

Three structural steel angles PowderGuard™ Premium powder coated black

Door roll
Direct driven, springless roll with integrated shafts; self-aligning grease-able sealed bearings; door does not require counterbalance device

Safety devices
Built-in drop stop device - patent pending design provides additional peace-of-mind against uncontrolled curtain travel in a high vehicular traffic area. 

Continuously monitored sensing edge - all doors are equipped with a mandatory reversing or sensing edge to prevent entrapment. 

Photoelectric safety sensors with guards - provide additional safety during door operation to help prevent injury and damage

Direct drive hypoid gear motor/brake assembly (20” per sec up speed / 12” per sec down speed); drive assembly and limit sensors are factory pre-assembled; manual crank for power outage

Single open/close/stop push button station incorporated into control panel

Wind load
20 psf when optional wear strips are not specified

5 year limited warranty coverage on all mechanical door system components and control panel hardware. ​

Door Options
​​Door Options
  • Flat profile type F-265 for doors up to 20’ wide also available in: 20, 18 gauge galvanized steel; 22, 20 gauge stainless steel; 16 gauge (.050”) aluminum
  • Bottom bar also available in: galvanized steel, stainless steel and aluminum
  • Wear strips are on available option, please note however that the 20 PSF wind load rating is no longer available when wear strips are selected
  • Guide options include: galvanized steel and powdercoated steel
  • Hood also available in: powdercoat, stainless steel and aluminum.
  • Brackets also available in: powdercoat and galvanized steel
  • Direct drive motors available in 1/2 HP, 1 HP, 2 HP, and 208/230/460 VAC 3-phase
  • Dual photoelectric sensors available for safety
  • Optional push buttons, loop detectors, radio control, motion detectors, or any combination thereof available for door operation/control
  • PowderGuard® Premium powder coat finish options are available in approximately 200 colors as well as custom matching to specification.
  • PowderGuard® Weathered Finish: Industrial textured powdercoat provides a thicker, more scratch resistant coat for added product protection
  • High wind load options available
  • Vision lites on 18 ga. steel slats uniformly spaced of 3" x 5/8" (76 mm x 16 mm) or 10” x 1” (254 mm x 25.4 mm) ​


Standard Exterior Color

  • white color swatch White
  • gray color swatch Gray
  • tan color swatch Tan

Actual door color may vary from the digital representation shown here. Actual color samples are available by request through your Overhead Door Distributor.

Powder Coat Color Options

​PowderGuard® Premium powder coat finish options are available in approximately 200 colors as well as custom matching to specification. On the RapidSlat® models this color optional upgrade includes a hardening additive that provides an attractive and durable finish and easy-to-clean surface. PowderGuard® Weathered finish, a thicker, industrial textured powder coat, is available in 11 colors providing enhanced scratch resistance as well as aiding in hiding the dirt and blemishes that often occur in commercial environments.​

Powder Guard color options​​​​​​