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Internet # 312853760

Model # CM.2222.B/C

Store SKU # 1005235225

22-1/2 in. x 22-1/2 in. Polycarbonate Fixed Curb Mount Skylight

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  • Sun-Tek's CM an All-Polycarbonate solution for Strength & Economy
  • 30 Times more Impact Resistant than acylic products
  • Provides a Leakproof Cap over your site built curb
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Product Details

About This Product

Natural light anywhere you want light! You won't believe the difference skylights make in your home. For more than 40 years our skylights have been making homes look brighter and more cheerful... and even bigger. You get more than your money's worth with Sun-Tek. Our Curb Mounted Polycarbonate Series which includes the CM, CMA & the MDCMA styles are all good choices for a very durable solution for a curb mount application. 1. The CM being the most economical is constructed of impact rated polycarbonate that is 30 times more impact resistant than acrylic! 2. The CMA upgrades the CM with an aluminum trim ring for strength and stylish aesthetics. 3. The MDCMA is the most rugged of the group with a welded & riveted frame featuring a Miami Dade hurricane rating.


  • 1-piece construction provides a leak-proof cap for the top of the flashed curb, safeguarding the interior of your home against moisture intrusion
  • Manufactured of polycarbonate that is more impact-resistant than acrylic, completely assembled out of the box and ready to install on a new or pre existing site built curb
  • Holes are pre-drilled and fasteners are included for ease of installation
  • Glazing provides 99% UV blockage to prevent sun damage to your home furnishings
  • Completely assembled out of the box
  • Florida building code approved
  • 10-year limited warranty
  • If a flashing kit is needed for your Sun-Tek curb mounted skylight, please order STEP FLASH 2549 kit. (Curb Not Included)
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Product Information

Internet # 312853760

Model # CM.2222.B/C

Store SKU # 1005235225


Dimensions: H 26.5, W 26.5 in, D 5.75


Product Depth (in.)


Product Height (in.)


Product Width (in.)

26.5 in

Rough Opening Height (in.)


Rough Opening Width (in.)



Cladding Type


Exterior Color/ Finish


Exterior Color/Finish Family



Impact Resistant, Light Transmittal

Frame Material


Glass Type




Interior Color/Finish Family


Maximum Roof Pitch (degrees)


Minimum Roof Pitch (degrees)


Product Weight (lb.)

4.25 lb



Skylight Mounting Type

Curb Mount



UV Protection (%)


Warranty / Certifications

Energy Star Qualified

Not Qualified

Manufacturer Warranty

10 year limited

Questions & Answers

Q:What is the U or R value for these?
by|Jul 26, 2023
1 Answer
Answer This Question

A:  The U-Value is 1.05 with 99% UV blockage.

by|Jul 26, 2023
    Q:Is it double plain
    by|May 2, 2023
    1 Answer
    Answer This Question

    A:  The CM 2246 B/C model has a Bronze outer polycarbonate dome and a flat Clear inner panel of polycarbonate silicone-sealed together.

    by|May 3, 2023
      Q:how to install skylight
      by|Feb 12, 2023
      1 Answer
      Answer This Question

      A:  Please see the Installation Guide under the Product Details for the CM 2222 model on HomeDepot.com.

      by|Jun 29, 2023
        Q:46- 1/2" X 46-1/2 in. Polycarbonate Fixed Curb Mount Skylight looking for this size for replacement
        by|Sep 28, 2021
        1 Answer
        Answer This Question

        A:  Thank you for your recent inquiry with The Home Depot The only option we carry on Homedepot.com for this size is internet # 316048916. You may want to check with your local store PRO Desk to see if a special order can be placed as well. We appreciate your business and look forward to serving you in the future

        by|Oct 5, 2021
          Showing 1-4 of 9

          Customer Reviews

          4.3 out of 5

          • 4.3 out of 32 reviews
          • 80% recommend this product
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          Showing 1-10 of 32 reviews
          measurements were bigger had to cut down
          Response from Sun-Tek Customer ServiceJul 24, 2023
          The "22 1/2" x 46 1/2" in the description shows the Roof Opening dimension the skylight fits.
          Under the "Specifications" tab, the actual dimension of the skylight is shown as 26 1/2" x 50 1/2". Since this is a curb mount style model it is made to fit over the curb that is built around the Roof Opening.
          • Verified Purchase
          Received my SUN-Tek skylight in a timely manner and in good condition. It was easy to install. Very pleased with the results.
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          Showing 1-10 of 32 reviews