Drop box diffusers

KEES helps customers achieve reliable, efficient air distribution in virtually any type and any size of building. Designed as a single-point air distribution system with directional air control, our drop box diffusers can be used with hard ceilings, T-Bar lay-in ceilings or connected directly to ductwork for open ceilings. The high-capacity output is ideal for large, open-area buildings such as food-processing plants, industrial facilities, gymnasiums, arenas, malls and warehouses. Directional air distribution is accomplished with single- or double-deflection grilles or drum louvers.

  • Galvanized steel, stainless steel or aluminum construction
  • Durable paint finishes or satin polish for any application
  • The optional fully welded, double-wall construction offers optimal durability where frequent wash downs are required
  • External drain pans and drain pan heaters are available

Standard Construction

  • 18-gauge galvanized steel
  • 18-gauge 304 or 316 stainless steel
  • 0.080" aluminum
  • Single-wall housing
  • Stitch welded seams
  • Single or double deflection grilles or registers
  • Standard sizes with capacities up to 70,000 CFM
  • Mill finish

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Models

DBD-44 Drop Box Diffuser – Four Sided, Four Way with Grilles
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DBD-44-SDP Drop Box Diffuser – Four Sided, Four Way with Grilles and Drain Pan
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DBD-44-DL Drop Box Diffuser – Four Sided, Four Way with Drum Louvers
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DBD-44-DL-SDP Drop Box Diffuser – Four Sided, Four Way with Drum Louvers and Drain Pan
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DBD-33 Drop Box Diffuser – Three Sided, Three Way with Grilles
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DBD-33-SDP Drop Box Diffuser – Three Sided, Three Way with Grilles and Drain Pan
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DBD-33-DL Drop Box Diffuser – Three Sided, Three Way with Drum Louvers
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DBD-33-DL Drop Box Diffuser – Three Sided, Three Way with Drum Louvers and Drain Pan
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DBD-43 Drop Box Diffuser – Four Sided, Three Way with Grilles
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DBD-43 Drop Box Diffuser – Four Sided, Three Way with Grilles and Drain Pan
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DBD-43-DL Drop Box Diffuser – Four Sided, Three Way with Drum Louvers
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DBD-43-DL-SDP Drop Box Diffuser – Four Sided, Three Way with Drum Louvers and Drain Pan
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DBD-SDP – Separate Drain Pan for Drop Box Diffusers
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Options & Accessories

  • Double-wall insulated housing
  • Integral drain pan
  • Separate drain pan
  • Heated drain pan
  • Drum louvers with or without dampers in lieu of grilles
  • Hinged or removable grilles
  • Perimeter mounting flange in lieu of collar
  • Satin polish stainless steel
  • Painted galvanized steel or aluminum

Customization

Custom drop boxes can be fabricated to any customer requirement. FAX or e-mail a sketch or drawing to KEES for quotation.
Some examples of custom fabricated drop boxes are:

  • High-capacity grilles in lieu of standard grilles or drum louvers
  • Six-sided drop box diffusers
  • Grille in the bottom of the drop box diffuser
  • Custom dimensions