46-1/2 in. x 46-1/2 in. Fixed Curb-Mount Skylight with Tempered Low-E3 Glass
- Skylights are an energy-efficient way to brighten any room
- Tempered, Low-E3, argon-filled, double paned glass
- Curb mount design ideal for flat or low-slope roof applications
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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.
Highlights
- FCM 4646 models are designed to fit a site-built curb (not included) with outside dimensions 49-1/2 in. x 49-1/2 in.
- Qualifies for a 10-year "No Leak" installation warranty when installed with ECL 4646 flashing on a shingle roof with a pitch between 10° and 60° or ECW 4646 flashing on a tile roof with a pitch between 14° and 60° (flashing kits are sold separately)
- Features tempered, Low-E3, argon-filled, double paned glass, which is recommended for in-reach applications
- Please note: VELUX recommends and most building codes require laminated glass 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 4646 0000
- Click here to view/purchase VELUX tile roof flashing model ECW 4646 0000
- Florida product approval FL13303.4 (FCM skylights with 05 tempered glass, size 4646 and smaller: SKG-PG140, approved for use outside HVHZ, not impact resistant, design pressure +140/-140)
- 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
- Return Policy
- California residentssee Prop 65 WARNINGS
Product Information
Specifications
Dimensions: H 51.375 in, W 51.375 in, D 3 in
Dimensions
Product Depth (in.) | 3 in |
|---|---|
Product Height (in.) | 51.375 in |
Product Width (in.) | 51.375 in |
Rough Opening Height (in.) | 46.5 in |
Rough Opening Width (in.) | 46.5 in |
Details
Cladding Type | Aluminum |
|---|---|
Exterior Color/ Finish | Neutral Gray |
Exterior Color/Finish Family | Gray |
Features | Argon Gas Filled, Light Transmittal |
Frame Material | Aluminum |
Glass Type | Energy Efficient Glass, Insulated Glass, Low-E Glass, Tempered Glass, Tinted Glass |
Included | Hardware |
Interior Color/Finish Family | Gray |
Maximum Roof Pitch (degrees) | 60 |
Minimum Roof Pitch (degrees) | 0 |
Product Weight (lb.) | 84.6 lb |
Returnable | 90-Day |
Skylight Mounting Type | Curb Mount |
U-Factor | 0.49 |
UV Protection (%) | 95.2 |
Warranty / Certifications
Energy Star Qualified | North-Central, Northern, South-Central, Southern |
|---|---|
Manufacturer Warranty | 10-year limited |
Questions & Answers
My framer did 49 1/4” is there such tolerance?
The outside curb measurement needed for this skylight is 17 1/2 x 49 1/2 inches. Skylight will still fit with a1/4 inch difference.
15% pitch is that okay for this skylight
The FCM model skylight is recommended to be installed with a 0° - 60° or 0:12 - 20:12 roof pitch.
Which flashing kit do I need for FCM 1430 0004
Elizabeth, the flashing kit you will need is determined by the roof pitch and roof material you will be installing with. Please contact us with the details of your project and we will be glad to assist you in making the correct choice. You can contact the Customer Service Team at 1-800-888-3589 between 8:00 am - 7:00 pm (Mon- Fri) or 9 am- 5pm (Sat) EST. Or you can email us at vcustomer.service@velux.com.
If this is being used on a shingle roof, the flashing kit is called: ECL 1446 0000C. For tile or thick shake material, the kit needed is: ECW 1446 0000C.
Can I be installed across the rafters?
Please reach out to VELUX Customer Service @ 1-800-888-3589. They can help you determine exactly what is needed for your application.
Is this window approved for all climate zones
Yes it can be used in all climate zones.
What is the curb size
Outside curb dimension needed is 25 1/2 x 49 1/2 inches.
Can this be installed on a metal roof?
Yes, you can install this skylight onto a metal roof. (up to 60 degree roof pitch) Your roofer or installer will need to fabricate their own flashing for this application as VELUX does not have a kit for this roofing material type.
I need to replace an existing damaged opening skylight (original manufacturer, Sunoptics, no longer makes residential skylights). The existing curb opening including flashing is 26.5 inches by 38 inches. What skylight will fit?
Please give VELUX a call at the Customer Service Team M-F at 1-800-888-3589 between 8:00 am - 7:00 pm and Sat 9:00 am - 5:00 pm Eastern time. We can discuss your measurements and application to help you find the best product to meet your needs. The VCM/VCS/VCE models in size 2234 have an outside curb measurement of 25-1/2" x 37-1/2" and a maximum skylight clearance of 26-5/8" x 38-5/8", this may work for you, but I would recommend calling so we can get all of the details from you and have a clear understanding of what is needed for the correct replacement.
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