Skip Content

Want to pay an invoice? Please call us at 1-800-GRAINGER (1-800-472-4643).

Roof Curb Adapters

17 results found that include 17 products

Roof curb adapters are devices used to create an opening in a roof. This separation between the roofing material provides structural support for the equipment that will sit on it. Use this tool to help enable an existing roof curb to be used when replacing a fan or ventilator. Galvanized steel roof curb adapters can increase or reduce the standard fan base dimension to a nonstandard or existing roof curb size. Find the roof curb adapter that fits your application.Close

Filter Results By

Results per page:  16 | 32 | 48
Roof Curb Adapter,Curb Side Sq O D 21 In
  • TM

    Grainger Choice

  • DAYTON
  • Item # 3AZK8
  • Mfr. Model # 3AZK8
  • Roof Curb Adapter, Increaser, Curb Side Square O.D. (In.) 21, Fan Side Square O.D. (In.) 18-1/2, Curb Height...More

Roof Curb Adapter,Curb Side Sq O D 26 In
  • TM

    Grainger Choice

  • DAYTON
  • Item # 3AZK9
  • Mfr. Model # 3AZK9
  • Roof Curb Adapter, Increaser, Curb Side Square O D 26 In, Fan Side Square O D 21 1/2 In, Top Flange Height 2...More

Roof Curb Adapter,Curb Side Sq O D 24 In
  • TM

    Grainger Choice

  • DAYTON
  • Item # 6KWP5
  • Mfr. Model # 6KWP5
  • Roof Curb Adapter, Increaser, Curb Side Square O D 24 In., Fan Side Square O D 21-1/2 In., Top Flange Height...More

Roof Curb Adapter,Curb Side Sq O D 18 In
  • TM

    Grainger Choice

  • DAYTON
  • Item # 3AZK2
  • Mfr. Model # 3AZK2
  • Roof Curb Adapter, Reducer, Curb Side Square O D 18 In, Fan Side Square O D 21 1/2 In, Top Flange Height 2...More

Roof Curb Adapter,Curb Side Sq O D 20 In
  • TM

    Grainger Choice

  • DAYTON
  • Item # 3AZK3
  • Mfr. Model # 3AZK3
  • Roof Curb Adapter, Reducer, Curb Side Square O D 20 In, Fan Side Square O D 21 1/2 In, Top Flange Height 2...More

Roof Curb Adapter,Curb Side Sq O D 34 In
  • TM

    Grainger Choice

  • DAYTON
  • Item # 3AZL2
  • Mfr. Model # 3AZL2
  • Roof Curb Adapter, Increaser, Curb Side Square O D 34 In, Fan Side Square O D 29 1/2 In, Top Flange Height 2...More

Roof Curb Adapter,Curb Side Sq O D 24 In
  • TM

    Grainger Choice

  • DAYTON
  • Item # 6KWP6
  • Mfr. Model # 6KWP6
  • Roof Curb Adapter, Reducer, Curb Side Square O D 24 In., Fan Side Square O D 25-1/2 In., Top Flange Height...More

Roof Curb Adapter,Curb Side Sq O D 40 In
  • TM

    Grainger Choice

  • DAYTON
  • Item # 3AZL3
  • Mfr. Model # 3AZL3
  • Roof Curb Adapter, Increaser, Curb Side Square O D 40 In, Fan Side Square O D 33 1/2 In, Top Flange Height 2...More

Roof Curb Adapter,40-1/2 In.,29-1/2 In.
  • TM

    Grainger Choice

  • DAYTON
  • Item # 20UV27
  • Mfr. Model # 20UV27
  • Roof Curb Adapter, Increaser, Curb Side Square O.D. (In.) 40-1/2, Fan Side Square O.D. (In.) 29-1/2, Curb...More

Roof Curb Adapter,Curb Side Sq O D 30 In
  • TM

    Grainger Choice

  • DAYTON
  • Item # 3AZL1
  • Mfr. Model # 3AZL1
  • Roof Curb Adapter, Increaser, Curb Side Square O D 30 In, Fan Side Square O D 25 1/2 In, Top Flange Height 2...More

Roof Curb Adapter,Curb Side Sq O D 17 In
  • TM

    Grainger Choice

  • DAYTON
  • Item # 3AZK1
  • Mfr. Model # 3AZK1
  • Roof Curb Adapter, Reducer, Curb Side Square O D 17 In, Fan Side Square O D 18 1/2 In, Top Flange Height 2...More

Roof Curb Adapter,Curb Side Sq O D 24 In
  • TM

    Grainger Choice

  • DAYTON
  • Item # 6KWP7
  • Mfr. Model # 6KWP7
  • Roof Curb Adapter, Reducer, Curb Side Square O D 24 In., Fan Side Square O D 29-1/2 In., Top Flange Height...More

Roof Curb Adapter,Curb Side Sq O D 26 In
  • TM

    Grainger Choice

  • DAYTON
  • Item # 3AZK5
  • Mfr. Model # 3AZK5
  • Roof Curb Adapter, Reducer, Curb Side Square O D 26 In, Fan Side Square O D 29 1/2 In, Top Flange Height 2...More

Roof Curb Adapter,Curb Side Sq O D 22 In
  • TM

    Grainger Choice

  • DAYTON
  • Item # 3AZK4
  • Mfr. Model # 3AZK4
  • Roof Curb Adapter, Reducer, Curb Side Square O D 22 In, Fan Side Square O D 25 1/2 In, Top Flange Height 2...More

Roof Curb Adapter,Curb Side Sq O D 42 In
  • TM

    Grainger Choice

  • DAYTON
  • Item # 3AZK7
  • Mfr. Model # 3AZK7
  • Roof Curb Adapter, Reducer, Curb Side Square O D 42 In, Fan Side Square O D 45 1/2 In, Top Flange Height 2...More

Roof Curb Adapter,Curb Side Sq O D 30 In
  • TM

    Grainger Choice

  • DAYTON
  • Item # 3AZK6
  • Mfr. Model # 3AZK6
  • Roof Curb Adapter, Reducer, Curb Side Square O D 30 In, Fan Side Square O D 33 1/2 In, Top Flange Height 2...More

Curb Adapter,Curb Side Sq O D 44 1/2 In
  • TM

    Grainger Choice

  • DAYTON
  • Item # 3AZL4
  • Mfr. Model # 3AZL4
  • Roof Curb Adapter, Increaser, Curb Side Square O D 44 1/2 In, Fan Side Square O D 40 In, Top Flange Height 2...More

Results per page:  16 | 32 | 48
Note: Product availability is real-time basis and adjusted continuously. The product will be reserved for you when you complete your order. More