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 RapidSlat® Model 621  


Advanced Service Door - RapidSlat 621 Series 

The RapidSlat® Model 621 Stormtite™ 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.

Max. standard width

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

Max. standard 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 powdercoat with hardening additive

Bottom bar

Two PowderGuard™ Premium powdercoated 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. 1/4" hot rolled PowderGuard™ Premium powdercoated black steel


Three structural steel anglesPowderGuard™ Premium powdercoated 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
Continously 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 second up speed/ 12" per second 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.

  • 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
  • Guide options include: galvanized steel, powdercoated steel and stainless steel
  • Hood also available in: powdercoat, stainless steel and aluminum. Sloped hood also available.
  • Brackets also available in: powdercoat, galvanized steel and stainless 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 powdercoat finish with hardening additive available in up to 197 colors as well as color-matching to specification
  • PowderGuard™ Weathered Finish: Industrial textured powdercoat provides a thicker, more scratch resistant coat for added product protection
  • Clear or bronze anodized aluminum