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Velux Fixed Curb Mount Skylight 4646

Regular Price: $414.40 Price: $311.00
You Save: $103.40 (25 %)
Item Number: FCM 4646 0005
Configuration: FCM 4646 0005
Manufacturer: Velux
Manufacturer Part No: FCM 4646 0005

Product Options

* denotes required field

Glass Options:*
Would you like to add a factory installed blind for your FCM Skylight?
Would you like to add a flashing? (required for No Leak warranty)

Quantity Discounts

1 to 2$311.00
3 to 9$295.45
10 to 29$289.23
30 to 59$283.01
60 to 99$276.79
100 to 299$270.57
300 or more$264.35
Dimensions (W" x H"):
Inside Curb: 46 1/2 x 46 1/2
Outside Curb: 49 1/2  x 49 1/2
Max Skylight Clearance: 50 5/8 x 50 5/8

The patented FCM curb mounted fixed skylight is sized to work with all types of site-built curbs, whether they're slightly out-of-square, pre-existing, or surrounded by unusually thick flashing and roofing material. Heavy-duty materials ensure the FCM skylight is built to withstand the installation process, as well as anything Mother Nature throws its way.


Clean, Quiet & Safe glass


  • Features Neat® glass coating to keep your skylight cleaner, longer, leaving skylights virtually spotless.
  • Reduce unwanted outside noise by up to 25% less than a standard double pane glass, and up to 50% less than a plastic skylight.
  • VELUX recommends and building codes require laminated glass for out of reach applications.

Factory installed blinds

Five factory installed blinds are available to include in the purchase of your skylight. Over 85 special order blinds also available. The blind uses its own independent, built-in solar panel and power system.

In-stock blackout blinds
Blocks 98% of light
In-stock light filtering blinds
In-stock venetian blind
Adjusts the light

Sunscreen accessory tray

A sunscreen accessory tray for standard sitebuilt curbs allows for installation of VELUX Pick&Click!™ blinds. Accessory tray is required for blind installation. 


Custom FCM skylights

Skylights available to fit curbs including flashing that have a maximum clearance dimension of 183⁄4” - 503⁄4” wide by 183⁄4” - 761⁄2” long. Up to 72” = 6 day production time + Transportation time. Greater than 72” = 10 day production time + Transportation time. 

We require maximum skylight clearance dimensions in 1⁄4” increments (0, 1⁄4, 1⁄2, 3⁄4) for width and height.
Custom size flashing kits and custom size blinds are not available.
Some specialty glass options require longer lead times.

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