![product-id.jpg product-id.jpg](https://cdn11.bigcommerce.com/s-gh6415xe0q/product_images/uploaded_images/product-id.jpg)
Every VELUX skylight and roof window features a data plate mounted on the frame. This dataplate contains the product serial number, which tells the skylight model, glass type and date of manufacture.
Tip: For the FS the plate is located at the bottom left frame, VS/VSE is at the bottom left sash. For QPF, FCM, VCM and VCE the information is stamped into the side of the exterior covers.
Pre-2010 Skylight models
How to locate the serial number to identify the model and size of your skylight
Step 1
Locate the metal plate on your skylight or roof window by looking on the frame in the suggested areas indicated by the red arrows listed below.
Step 2
Copy the model and size from the plate to use on the "Model" and "Size" pages under the "Make Your Selection".
![id-location.jpg id-location.jpg](https://cdn11.bigcommerce.com/s-gh6415xe0q/product_images/uploaded_images/id-location.jpg)
VS,VSE, QVS, QVM
Venting skylights
![vs-vse-qvs-qvm.jpg vs-vse-qvs-qvm.jpg](https://cdn11.bigcommerce.com/s-gh6415xe0q/product_images/uploaded_images/vs-vse-qvs-qvm.jpg)
The sash may need to be opened to see the metal tag
Note: The tags for newer skylights are at the top of the frame
FS and QFS
Fixed skylights
![fs-qfs.jpg fs-qfs.jpg](https://cdn11.bigcommerce.com/s-gh6415xe0q/product_images/uploaded_images/fs-qfs.jpg)
FSF
Fixed skylights with vent flap
![fsf.jpg fsf.jpg](https://cdn11.bigcommerce.com/s-gh6415xe0q/product_images/uploaded_images/fsf.jpg)
Note: Under flap when open
GDL Cabrio
![gdl.jpg gdl.jpg](https://cdn11.bigcommerce.com/s-gh6415xe0q/product_images/uploaded_images/gdl.jpg)
Note: Open the top of the GDL then pull bar at top to flip sash, tag is on top of the sash
GPL and GHL
![gpl-ghl.jpg gpl-ghl.jpg](https://cdn11.bigcommerce.com/s-gh6415xe0q/product_images/uploaded_images/gpl-ghl.jpg)
Note: Open the roof window then pull bar at top to flip sash, tag is on top of the sash
GGL
![ggl.jpg ggl.jpg](https://cdn11.bigcommerce.com/s-gh6415xe0q/product_images/uploaded_images/ggl.jpg)
FCM, VCM and VCE
![fcm-vcm-vce.jpg fcm-vcm-vce.jpg](https://cdn11.bigcommerce.com/s-gh6415xe0q/product_images/uploaded_images/fcm-vcm-vce.jpg)
Note: Depending on installation orientation the serial number can be found stamped on one of the four sides
SUN TUNNEL™
![sun-tunnel-22.jpg sun-tunnel-22.jpg](https://cdn11.bigcommerce.com/s-gh6415xe0q/product_images/uploaded_images/sun-tunnel-22.jpg)
Serial number is stamped on the bottom of flashing near the center
Note: This stamp only contains the block code, not the model or size
QFT, QVT and QET
![qft-qvt-qet.jpg qft-qvt-qet.jpg](https://cdn11.bigcommerce.com/s-gh6415xe0q/product_images/uploaded_images/qft-qvt-qet.jpg)
Note: Top right corner as viewed from inside
CM, CAP, CMA and CVA
Commercial
![cm-cap-cma-cva.jpg cm-cap-cma-cva.jpg](https://cdn11.bigcommerce.com/s-gh6415xe0q/product_images/uploaded_images/cm-cap-cma-cva.jpg)
Note: Depending on installation orientation the serial number plate can be found on one of the four sides