#1 Home Improvement Retailer

Internet # 205939169

Model # FCM 3446 0004

Store SKU # 1001299156

34-1/2 in. x 46-1/2 in. Fixed Curb-Mount Skylight with Laminated LowE3 Glass

Apply Now
Pay $416.59 after $50 OFF your total qualifying purchase upon opening a new card. info
Apply for a Home Depot Consumer Card
  • Glass stays cleaner longer with Neat glass coating
  • Laminated glass meets building codes in out of reach applications
  • Curb mount design ideal for flat or low-slope roof applications
  • View More Details
0 in stock
Free & Easy Returns In Store or Online
Return this item within 90 days of purchase. Read Return Policy

Product Details

About This Product

VELUX FCM fixed curb mount skylights are ideal for replacing existing curb mount skylights, including old plastic bubble skylights. It can be installed on a flat roof at 0° up to a 60° roof pitch on a site-built curb. VELUX skylights are an energy-efficient way to bring sunlight into a home and make dark rooms come to life, all while maintaining privacy. Installing a skylight is one of the most impactful ways to enhance the brightness and beauty of a room.


  • FCM 3446 models are designed to fit a site-built curb (not included) with outside dimensions 37-1/2 in. x 49-1/2 in.
  • Qualifies for a 10-year "No Leak" installation warranty when installed with ECL 3446 flashing on a shingle roof with a pitch between 10° and 60° or ECW 3446 flashing on a tile roof with a pitch between 14° and 60° (flashing kits are sold separately)
  • Features clean, quiet and safe Low-E3 laminated glass with a Neat glass coating that keeps your skylight cleaner, reduces unwanted outside noise and comes warranty with a 10-year hail warranty against glass breakage
  • Consists of double paned argon gas filled low-E3 glass that provides excellent energy performance for year round comfort, plus the added safety of laminated glass, which building codes require for out of reach applications
  • Click below to view and purchase compatible VELUX flashing models
  • Click here to view/purchase VELUX shingle, shake and slate roof flashing model ECL 3446 0000
  • Click here to view/purchase VELUX tile roof flashing model ECW 3446 0000
  • Florida product approval FL13303.1 (FCM skylights with 04 laminated glass, size 4646 and smaller: SKG-PG120, approved for use outside HVHZ, not impact resistant, design pressure +175/-120)
  • Texas Department of Insurance TDI SK03: VELUX FCM skylights with non-impact resistant glass are compliant with wind load criteria in Chapter 3 of the IRC and Section 1609 of the IBC
  • Click here to learn more about Eco Options and Energy Efficiency
  • Return Policy
  • California residents
     see Prop 65 WARNINGS

Product Information

Internet # 205939169

Model # FCM 3446 0004

Store SKU # 1001299156


Dimensions: H 51.375 in, W 39.375 in, D 3 in


Product Depth (in.)

3 in

Product Height (in.)

51.375 in

Product Width (in.)

39.375 in

Rough Opening Height (in.)

46.5 in

Rough Opening Width (in.)

34.5 in


Cladding Type


Exterior Color/ Finish

Neutral Gray

Exterior Color/Finish Family



Argon Gas Filled, Light Transmittal, Severe Weather Ready

Frame Material


Glass Type

Energy Efficient Glass, Insulated Glass, Laminated Glass, Low-E Glass, Tinted Glass



Interior Color/Finish Family


Maximum Roof Pitch (degrees)


Minimum Roof Pitch (degrees)


Product Weight (lb.)

47.3 lb



Skylight Mounting Type

Curb Mount



UV Protection (%)


Warranty / Certifications

Energy Star Qualified

North-Central, Northern, South-Central, Southern

Manufacturer Warranty

10-year limited

Questions & Answers

Q:Is this skylight equipped with impact glass?
by|Jun 3, 2024
1 Answer
Answer This Question

A:  This particular skylight has laminated glass, but the one on this link has Impact Rated: https://www.homedepot.com/p/202329719

by|Jun 4, 2024
    Q:not sure what the outside of curb length and width is. but the outside of skylight (window) frame is 27"x 51" exactly. need to get this size
    by|May 28, 2024
    1 Answer
    Answer This Question

    A:  The VELUX FCM 2246 0004D is a fixed curb mounted skylight with that dimension. You can find that model on this link: https://www.homedepot.com/p/202038780 If you prefer a venting model, check out the VCS 2246 2004: https://www.homedepot.com/p/204463795 Many VELUX skylights are eligible for a 30% Federal Tax Credit too! Program details are found here: https://www.veluxusa.com/help/tax-credit

    by|May 29, 2024
      Q:can the 25.5.x25.5 to be open wide enough where a person can go through it?
      by|May 27, 2024
      1 Answer
      Answer This Question

      A:  VELUX venting curb-mounted skylights will have a drive chain that pushes the sash open and not suitable for Egress. Consider our CXP model for flat roofs or our GPU or GXU if you have a sloped roof scenario. Be sure to call VELUX @ 1-800-888-3589 for more details.

      by|May 28, 2024
        Q:Can you put a reflective film on the inside glass?
        by|May 25, 2024
        1 Answer
        Answer This Question

        A:  Please do not put reflective film onto VELUX Skylights as this can create a "heat sink" which can crack the glass. If you need to reduce heat gain and light, choose a VELUX solar powered shade instead. It will include a remote control and is eligible for a 30% Federal Tax Credit too! Details can be found on the following link: https://www.veluxusa.com/help/tax-credit

        by|May 28, 2024
          Showing 1-4 of 555

          Customer Reviews

          4.7 out of 5

          • 4.7 out of 1,145 reviews
          • 95% recommend this product
          Filter by:
          Showing 1-10 of 1,145 reviews
          • Verified Purchase
          Skylights to light the day!
          Just had this installed May 2024 & so glad when we opt'd to get a new roof we decided upon installing new skylights
            • Recommended
            Phenomenal product
            Love how one these are!, the clean line edges are amazing and truly open up the place
              • Recommended
              great skylight
              replaced an old skylight with this solar one. great addition. easy install.
                • Recommended
                Velux will NOT honor warranty!
                I had two of these installed by a Velux contractor. In year five--last year--one leaked above the LR. Velux sent out the same installer, who blamed the fire prinkler system---which is not even near the skylights, and was found in perfect condition by my insurance adjuster! Despite the ten-year warranty, and it being only year 5, Velux refuses to fix it! Lots of complaints on BBB re this. I guess they'll next blame aliens! I'll be suing them when the rain stops. Judge E. Smith, Ret.
                Response from VELUXCustomerServiceTeamMar 28, 2024
                VELUX is committed to quality and excellence so you can rest assured that our technical solutions team has managed your warranty claim with due diligence. Neither the technician nor the department head found any indication of defects with your skylights during their inspections. It’s my understanding that we are waiting for you to provide some information that was requested in order for your warranty claim to receive further consideration, so please refer back to the communications you received. Thank you. Velux
                  Good Quality Product
                  [This review was collected as part of a promotion.] I recently had my cottage reroofed and replaced two existing skylights with two Velux fixed Skylights. They look great, are well constructed and look like they will hold up for a long time. The price was also very reasonable.
                    • Recommended
                    Outstanding craftsmanship
                    [This review was collected as part of a promotion.] Installed this past summer and I love the light it provides in our loft. Velux products are so well made and they stand behind their products. Wouldn't think of installing any other brand.
                      • Recommended
                      Quiet replacement for a cracked dome skylight. Easy install. Good price and appartent quality.
                      • Verified Purchase
                      Great features love them
                      We purchased 4 replacement fixed skylights and they are awesome. The features have been improved over the years and they look sound amazing. So happy with the upgrade
                        • Recommended
                        my invitation to heaven
                        [This review was collected as part of a promotion.] I will always love the skylights of my entrance to Heaven
                        Response from VELUX Customer ServiceNov 10, 2023
                        Amazing picture! Inspirational and for sure makes for a great living space!
                          • Recommended
                          Showing 1-10 of 1,145 reviews