In-field Replacement AC Units

Price Match Guarantee

The DDB adapter collars, provide a cost-effective solution to upgrading or replacing of your existing HVAC unit. Designed as a direct replacement for many infield makes and models, the DDB retrofit plenums offer a complete solution for infield replacement on most DDB enclosures.

With the purchase of any new N28 or N36 series HVAC unit, DDB will include the conversion kit at no additional charge. Call to speak to your account representative for details and sizing options and how to get your no charge conversion kit.

Features & Specifications


  • Conversion collar for Pentair Air Conditioners
  • In-field retrofit

Application Types

Provides a DDB enclosure to be retrofitted with a Pentair Air Conditioner

Industry Standards

  • NEMA 4

Base Cabinet Weight and Dimensions

30”H x 12.5“W x 1.5”D
Approximate Weight:
Raw 6 lbs. / Shipping 10 lbs.
Shipping Dimensions:
36”H x 15” W x 4”D

36.75”H x 16“W x 1.5”D
Approximate Weight:
Raw 8 lbs. / Shipping 19 lbs.
Shipping Dimensions:
42”H x 21” W x 6”D

42.625”H x 16“W x 1.5”D
Approximate Weight:
Raw 11 lbs. / Shipping 20 lbs.
Shipping Dimensions:
47”H x 21” W x 6”D

Call and let our experienced team help you with your build.