VELUX Product ID Locations

Every VELUX skylight and roof window features product information marked on the unit. This marking contains the product serial number, which tells the skylight model, glass type and date of manufacture. When ordering accessories for existing products or requesting product servicing, you should locate this number prior to contacting us. Doing so will help us provide you with the best service possible.

Product ID for products prior to 2010

For additional information on products prior to 2010, please click here to find your product ID for products purchased prior to 2010.

A graphic showing VELUX USA product ID plates and stickers with their different ID components outlined


Exterior and Interior views of a VELUX USA skylight

Sun Tunnel Skylights

A VELUX USA sun tunnel from the exterior view

Roof Windows

A VELUX USA roof window, from its interior view

Commercial Skylights

Three models of VELUX USA commercial skylights, the domed unit, structural model, and modular VMS
 Fixed Skylights
 Interior Interior frame, one of two corners  FS, QFT
 Exterior Exterior frame, one of four sides EF, QPF, QFT, FCM, GSM, FXG, CXP, CFU 
 Venting Skylights
 Interior Interior frame, one of two corners
 Exterior  Exterior frame, one of four sides  VCM, VCS, VCE, EV, EVMS
 Sun Tunnel® Skylights
 Interior  Sticker on interior screw-in diffuser  TLR
 Exterior  Sticker on black ring, can be seen through dome  TGR, TMF, TMR, TMF, TCR, TCC
Exterior   Exterior frame, one of four sides  TZR, TZRL, TZRQ
 Roof Windows
 Interior  Left side of sash when open  GPU, GGU, GDL
 Interior  Right side of sash when open  GXU
 Interior  Label on underside of shade; pre-2025 also needs skylight ID, visible when shade is retracted
 Commercial Skylights
 Exterior  Sticker or tag on one of the four frame sides  Domed Unit Skylights
 Exterior  Remove cap closure, sales order  number is etched on inside  Structural / Architectural
 Interior  Upper right side of sash  Modular (VMS)