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Home » Loading Dock Seals - Sentry 21

Loading Dock Seals - Sentry 21

Proven protection for loading docks during all seasons.

Whether it's new construction or renovation...bring your loading docks into the new millennium with the OTCO Sentry 21 Seal-Shelter. High-density foam pads serve as the frame, while the tailored draft-pads (A) seal the bottom of the unit. The unique curtain and foam frame design allows for complete access to the trailer opening. Removable curtains (B) offer greater ventilation when required. The strong hook & loop configuration permit easy removal or replacement of only what is needed when necessary.

OTCO's distinct craftsmanship along with quality materials create a weather-tight seal, guarding you from the elements.

Wood frames and steel bumpers are standard with OTCO Model #RD70

Loading Dock Seals - Sentry 21
  Loading Dock Seals 

Loading Dock Seals Standard Unit Features

  • 22oz Vinyl Base Fabric
  • Curtains and wear points of HT4052-High Tear Vinyl. Made to withstand temperatures of -65°F to 200°F. High abrasion resistant.
  • Standard Projection 18"
  • High-Density Foam Pads 

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