3500 Series Dock Seal Daigram

Flexible Dock Shelter – 3500 Series

Overview

The Fairborn Series 3500 is a pivot arm dock shelter built for docks where space is limited but performance can't be compromised. Similar to the Series 3000 but with tapered side curtains and foam bottom wedge pads instead of vertical fabric-covered foam bottom pads, the 3500 may be an alternate selection when space limitations or other considerations preclude a rigid frame dock shelter. The shelter stays in the extended position and uses spring tension to hold the curtains tight against the truck body upon vehicle entry.Barron Equipment has over 40 years of experience selling, installing, and maintaining loading dock equipment.

Features and Benefits

The Series 3500 uses the same pivot arm and 4-wheel trolley system as the Series 3000 — but with one key design difference. The side curtains taper from top to bottom rather than hanging straight down. This means less material pushing against the building wall and less horizontal space needed at the dock opening. It's a meaningful advantage when doors are close together or the dock area has other space constraints.

The Series 3500 includes a standard pull rope assembly to raise and lower the head curtain. This gives dock personnel direct control over the head curtain position — especially useful when servicing unusually tall trailers or when you need to quickly raise the curtain between trucks. The adjustable head curtain uses Touch and Hold patches for field repositioning, and the split outer cover with Touch and Hold closures conforms to a wide range of trailer profiles. If an inclined drive approach requires a greater than 3" differential in top and bottom projection, this series shelter is not suitable. Level and declined approaches work well.

Application

The Series 3500 fits docks that need the adjustability and greater projection depth of a pivot arm shelter but also face space restrictions that make a wider footprint impractical. The shelter is normally in the extended position and utilizes spring tension to hold the curtains tight to the truck body, while a split head curtain adds versatility for servicing a wide range of vehicles. It works well wherever the combination of tapered side curtains and an operator-controlled head curtain makes daily operations simpler. Here's where it performs best:

  • Docks with Doors Spaced Close Together — The tapered curtain profile reduces lateral spread, making it possible to install the shelter in openings where a straight-hanging side curtain would crowd an adjacent door.
  • Facilities with Varying Trailer Roof Heights — The standard pull rope assembly lets dock personnel raise or lower the head curtain manually without tools, accommodating a mix of trailer heights across shifts.
  • Docks with Deeper Bumper Projections — Projection options of 15", 20", 25", and 30" handle docks where standard projection depths fall short of a proper seal.
  • Climate-Controlled & Refrigerated Operations — Wedge-shaped foam bottom pads seal the lower corners at an angle, and the spring-tensioned side curtains maintain contact with the trailer body to minimize conditioned air loss.
  • Level or Declined Drive Approaches — If an inclined drive requires greater than a 3" differential in top and bottom projection, this series shelter is not suitable. Level and declined approaches are well-suited for the 3500.

Selection Assistance

The Series 3500 is the right choice when you need the projection depth and adjustability of the 3000 series, but a smaller lateral footprint or an operator-controlled head curtain matters for your dock layout. For sizing: the shelter frame should project 14"–18" beyond the dock bumper. At a flush dock with a 6" bumper projection, the standard projection should be 20"–24" for a standard 11'6" wide shelter.The top of the shelter should be kept as close to 15'0" off grade as possible.Barron's team has been installing dock shelters for over 43 years and can replace old shelters or install new ones on openings that have never had a shelter before. Contact us for a sizing consultation

FAQs

What makes the Series 3500 different from the Series 3000?

The Series 3500 is similar to the Series 3000 but has tapered side curtains and foam bottom wedge pads instead of the vertical fabric-covered foam bottom pads used on the 3000. The tapering reduces the lateral space the shelter takes up, making it a better fit for docks where space between doors is limited. The 3500 also includes a standard pull rope assembly for raising and lowering the head curtain.

Does the Series 3500 include a pull rope system for the head curtain?

Yes. The Series 3500 includes a standard pull rope assembly to raise and lower the head curtain. Left and right ropes route through pulleys on the head frame and secure to a cleat on the side frame, giving dock personnel manual control over curtain height.

Is the Series 3500 suitable for inclined drive approaches?

If an inclined drive approach requires a greater than 3" differential in top and bottom projection, this series shelter is not suitable. Level and declined approaches are appropriate for the Series 3500.

What projection depths are available?

Shelter projection options include 15", 20", 25", and a maximum of 30". Shelter width ranges from standard 10'-6" to maximum 11'-0", and shelter height maximum is 12'-0".

How are the bottom wedge pads attached?

Bottom wedge pads are sew-attached to side curtains at the factory. They are supported horizontally and secured to the wood side members with wood screws through grommeted holes. Velcro attachments secure the lower face of the side curtains. Elastic tether cords route through holes in the wedge pads up to screw eyes in the side members to keep the pads in a horizontal position.

What fabric options are available and is there a warranty?

Dynalon fabric is warranted against weathering for five years, covering sunlight, water, cold, and heat.All Fairborn products are warranted against defects in workmanship and materials for one year from date of shipment, when properly sized, installed, and maintained. Additional fabric grades (1001, 1004, 1005, 1006, 1008) are also available.

Does Barron Equipment install and service the Series 3500?

Yes. Barron's team has been installing dock shelters for over 43 years. We install new shelters, replace old ones, and handle all types of dock shelter repairs and rehinging.

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