Dock Seals
Sentry 21 Loading Dock Shelter - High-Performance Dock Shelter with Full Trailer Access
The Sentry 21 Loading Dock Shelter is engineered with high-quality, rugged construction to deliver a superior weather-tight dock seal while allowing complete trailer access. Ideal for warehouses and distribution facilities, this loading dock shelter system enables full, unobstructed loading and unloading—with no steel supports required, reducing installation complexity and maintenance.
As the trailer backs into position, the flexible curtain system wraps securely around the truck, forming a tight, reliable seal that helps prevent air infiltration and protects against outside elements. This advanced design enhances energy efficiency by keeping heated or cooled air inside your facility.
Built for durability and performance, the Sentry 21 features high-density foam side frames, eliminating the need for traditional steel supports while maintaining structural integrity. Removable side curtains are attached with 4” Velcro, allowing for quick and easy replacement—minimizing downtime and extending the life of your dock shelter system. The head curtain is mounted 4” above the side pads, creating a 4” tapered roof for improved water runoff and sealing performance.
A reinforced 1 ½” pipe frame adds extra strength and stability, while custom-designed bottom draft pads provide an effective seal at the base of the unit, reducing drafts and improving loading dock energy conservation.
The side frames are constructed with select treated wood backers and high-density foam, all covered in durable 22 oz. UV-rated vinyl. Curtains are made from heavy-duty, high-tear, high-abrasion 40 oz. UV-rated vinyl, ensuring long-lasting performance in demanding industrial loading dock environments.
Standard angled mounting brackets are included for easy installation to your building.
Upgrade your facility with the Sentry 21—an efficient, durable, and low-maintenance dock shelter solution designed for maximum sealing performance, energy savings, and operational efficiency.
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