VELUX

Model VCS 4646 2004

Internet #204463799

46-1/2 in. x 46-1/2 in. Solar Powered Fresh Air Venting Curb-Mount Skylight with Laminated Low-E3 Glass

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Product Overview

The new solar powered fresh air skylight Lights up your home and provides proper ventilation using only the power of the sun. It features a solar panel that captures any available daylight, and uses it to recharge a highly efficient battery powered operator and control system. The solar panel does not have to be exposed to direct sunlight to function, so it will work on cloudy days and with indirect light.

  • Eligible for a 30% federal solar tax credit on both product and installation costs, making this product very affordable
  • Eligible for a 30% federal tax credit on both product and installation costs, making this product very affordable
  • Qualifies for a 10-year no leak installation warranty when installed with VELUX flashing (Required, sold separately) on a shingle, shake, or slate roof with a pitch between 10 Degree and 60 Degree or a tile roof with a pitch between 14 Degree and 60 Degree
  • Features laminated clean, quiet and safe glass with a neat glass coating that keeps your skylight cleaner, reduces unwanted outside noise, is energy efficient, and has an extra glass pane for added safety
  • Operated by a VELUX integra control pad (Included) with easy touch screen control
  • An integrated rain sensor will close the skylight automatically, in case of inclement weather
  • Consider adding a VELUX solar powered blind (Sold and shipped separately) which is eligible for a 30% federal tax credit and allows you to control the light
  • 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



  • Click here for more information on Electronic Recycling Programs

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Customer Questions & Answers

19 Questions23 Answers

Customer Questions & Answers

46-1/2 in. x 46-1/2 in. Solar Powered Fresh Air Venting Curb-Mount Skylight with Laminated Low-E3 Glass
46-1/2 in. x 46-1/2 in. Solar Powered Fresh Air Venting Curb-Mount Skylight with Laminated Low-E3 Glass

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1 answer

Is is possible to make a VCM solar-powered?

This question is from 46-1/2 in. x 46-1/2 in. Solar Powered Fresh Air Venting Curb-Mount Skylight with Laminated Low-E3 Glass
Asked by
South Carolina
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August 27, 2016
I have a 4646 VCM skylight, and I was wondering if it would be possible to retro-fit a solar panel to the existing skylight. Any thoughts? Also, what is the long term hassle with the VCS, such as the life expectancy of the battery unit? I'm considering getting another VCM just to avoid the eventual wear-out of the solar components.
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Answer (1)

August 29, 2016
Answer: 
No, it is not possible to convert a VCM Manual unit to a Solar Powered unit. You must purchase the VCS Solar Powered Curb Mount Skylight. Thank you for choosing VELUX!
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2 answers

Can the skylight be opened without power

This question is from 22-1/2 in. x 46-1/2 in. Solar Powered Fresh Air Venting Curb-Mount Skylight with Laminated Low-E3 Glass
Asked by
Seattle, WA
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August 10, 2016
Can the skylight be opened manually in case of battery failure?
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Answers (2)

August 15, 2016
Answer: 
No, our Solar Powered Skylight cannot be opened manually. It must be opened with the remote control. Thank you for choosing VELUX!
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August 11, 2016
Answer: 
Yes, this can be opened manually.
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1 answer

touch screen panel

This question is from 22-1/2 in. x 46-1/2 in. Solar Powered Fresh Air Venting Curb-Mount Skylight with Laminated Low-E3 Glass
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August 1, 2016
can you put more then just one skylight on the touch screen panel? we have a 16' by 25 covered porch and would like to add four of these, but we don't want 4 touch screens on our wall; or is there a different unit that will connect with the other touch screen panel. thanks.
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Answer (1)

August 4, 2016
Answer: 
You can program multiple skylights on the remote. For information on how to do so, you can contact our Technical Team direct at 1-800-888-0361. Thank you for choosing VELUX!
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1 answer

Is the operator the motor and battery? Is it possible to open and close the skylight without a working operator?

This question is from 34-1/2 in. x 34-1/2 in. Solar Powered Fresh Air Venting Curb-Mount Skylight with Laminated Low-E3 Glass
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May 10, 2016
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Answer (1)

May 12, 2016
Answer: 
The operator for the solar powered skylights does encompass both the battery and the motor. The only way to open the skylight manually is to disconnect the chain from the operator with the allen wrench that comes with the skylight. Then you can push the sash up by hand, or let it lay flat.
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Customer Reviews

Rated 5.0 out of 5 by 5 reviewers.
Rated 5.0 out of 5.0 by Very well made product---so far I rated the 'installation' as "excellent" based only on the unit itself. For a DIY homeowner, if the opening for the skylight has yet to be cut and/or the 'curb' has not been built onto which the skylight is mounted, then this becomes a much more involved, and complicated project. That being said, Velux has made a very good product which looks very weather proof. Because it is a solar system there is no wiring to run, and the solar panel mounts very easily with only two screws and a simple snap electrical connector. The remote, touchsreen, control module is very easy to operate and the rain sensor worked flawlessly. Because I have only had the unit installed for about 2 weeks, I have no way to rate the quality beyond that time frame. May 17, 2016
Rated 5.0 out of 5.0 by superb design and construction These newest skylights from Velux are amazing: they can be operated without an electrical supply, instead being powered from their own solar panels. A built-in rain sensor will close the window automatically. The quality of the construction and design is first rate, and they are easy to install (caveat: well built in this case means heavy). The remote is easy to program and can control many skylights with tons of options. One worry, which I hope isn't a problem in the long run: there's an internal battery charged from the solar panel, but I don't see any way to replace it if it goes bad. October 5, 2013
Rated 5.0 out of 5.0 by Thought I made a mistake, but.... Thought I made a mistake, but....We love the solar powered skylight!!!!! I had buyers remorse at first, but after was installed, and we started using it, couldn't be more happy. It lets so much air threw, I cant believe it myself. Plus the quality is there! You wont regret it. September 15, 2015
Rated 5.0 out of 5.0 by WOW this skylight is amazing I have 4 of the older ones that are hard wired and was a little apprehensive ordering this one but was certainly impressed. It's been installeda couple months now and it's spectacular. The operation in smooth and quiet, the controller is easy and impressive. October 28, 2014
Rated 5.0 out of 5.0 by good product I brought this product last week and it works more than what I expected. Worth for paid money November 12, 2013
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