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    Boxes & Covers

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    1. RACO-201 25" x 20" x 6", 2000 CFM, MERV 10, Air Cleaner Media Filter
      RACO-201 25" x 20" x 6", 2000 CFM, MERV 10, Air Cleaner Media Filter
      $6.20 / EA
      Availability: 190 EA
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    2. 53151 1/2 4" x 1-1/2" x 4", 12-Knockout, 21 Cu Inch, Pre-Galvanized Steel, Square Outlet Box Extension Ring
      53151 1/2 4" x 1-1/2" x 4", 12-Knockout, 21 Cu Inch, Pre-Galvanized Steel, Square Outlet Box Extension Ring
      $2.53 / EA
      Availability: 176 EA
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    3. 53151 1234UB 4" x 1-1/2" x 4" 21Cu Inch 10Knockout Pre-Galvanized Welded Steel Square Outlet Box Extension Ring
      53151 1234UB 4" x 1-1/2" x 4" 21Cu Inch 10Knockout Pre-Galvanized Welded Steel Square Outlet Box Extension Ring
      $6.93 / EA
      Availability: 40 EA
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    4. 53171 1 IN.4SQBX EXT,STL,30.3CU, 1-KOIN.
      53171 1 IN.4SQBX EXT,STL,30.3CU, 1-KOIN.
      $5.09 / EA
      Availability: 21 EA
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    5. 73151 1/2 3/4 4-11/16" x 1-1/2" x 4-11/16", 29.5 Cu Inch, Pre-Galvanized Welded Steel, 12-Knockout, Square Outlet Box Extension Ring
      73151 1/2 3/4 4-11/16" x 1-1/2" x 4-11/16", 29.5 Cu Inch, Pre-Galvanized Welded Steel, 12-Knockout, Square Outlet Box Extension Ring
      $4.32 / EA
      Availability: 17 EA
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    6. 531711234 4" x 2-1/8" x 4" 30.3Cu Inch 12Knockout Pre-Galvanized Welded Steel Square Outlet Box Extension Ring
      531711234 4" x 2-1/8" x 4" 30.3Cu Inch 12Knockout Pre-Galvanized Welded Steel Square Outlet Box Extension Ring
      $4.75 / EA
      Availability: 11 EA
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    7. 53151 1/2 3/4 4" x 1-1/2" x 4", 12-Knockout, 21 Cu Inch, Pre-Galvanized Steel, Square Outlet Box Extension Ring
      53151 1/2 3/4 4" x 1-1/2" x 4", 12-Knockout, 21 Cu Inch, Pre-Galvanized Steel, Square Outlet Box Extension Ring
      $2.25 / EA
      Availability: 6 EA
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    8. 53151 3/4 4" x 1-1/2" x 4", 8-Knockout, 21 Cu Inch, Silver, Pre-Galvanized Steel, Square Box Extension Ring
      53151 3/4 4" x 1-1/2" x 4", 8-Knockout, 21 Cu Inch, Silver, Pre-Galvanized Steel, Square Box Extension Ring
      $2.72 / EA
      Availability: Currently out of stock
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