VELUX Window Size Chart - Roofing Superstore Help & Advice

Help & Advice > Product Guides > Roof Windows

VELUX roof window sizes can be tricky to work out from the codes alone. That’s why we’ve put together a VELUX window sizes chart to do the hard part for you. Simply find the model number of the window that fits your space and use it to shop for the VELUX products and prices you need more easily. Here are some quick helpful tips when it comes to sizing:

The three or four letter code starting with G is the window type
The code starting with two to four letters and ending with two numbers is the size
Size codes normally start with: BK, CC, CK, FC, FK, FFK, FFKF, MC, MK, PC, PK, SC, SK, or UK
For low pitch and flat roof windows, check out our VELUX flat roof window sizes guide.

Roofing Superstore’s VELUX codes and model numbers chart below will break this information down further. Just pick the height and width of your window space to find the correct model number.

Don’t forget about our price match promise on all VELUX windows. If you can find the same size window anywhere else for less, we’ll match that price and give you free delivery!

Find your size and click the size code below to see what VELUX window you could add to your project.

VELUX window sizes
VELUX conservation window sizes
VELUX 2in1 and 3in1 window sizes
How do I find my VELUX window code?

VELUX window sizes

Height							Width
	47cm	55cm	66cm	78cm	94cm	114cm	134cm
55cm					VELUX PK25
62cm				VELUX MK27
70cm		VELUX CK01				VELUX SK01
78cm		VELUX CK02
92cm						VELUX SK34
98cm	VELUX BK04	VELUX CK04	VELUX FK04	VELUX MK04	VELUX PK04		VELUX UK04
118cm		VELUX CK06	VELUX FK06	VELUX MK06	VELUX PK06	VELUX SK06
140cm			VELUX FK08	VELUX MK08	VELUX PK08	VELUX SK08	VELUX UK08
160cm				VELUX MK10	VELUX PK10	VELUX SK10	VELUX UK10
180cm				VELUX MK12

VELUX conservation window sizes

VELUX conservation windows are criteria-compliant and perfectly suited for older and heritage buildings.

Height					Width
	55cm	66cm	78cm	94cm	114cm
98cm	VELUX CC04
118cm	VELUX CC06	VELUX FC06	VELUX MC06
140cm		VELUX FC08	VELUX MC08	VELUX PC08	VELUX SC08
160cm					VELUX SC10

VELUX 2in1 and 3in1 window sizes

For even more daylight, choose VELUX 2in1 or even 3in1 windows.

Height					Width
	127cm	139cm	140cm	151cm	155cm
118cm	VELUX FFK06	VELUX FMK06		VELUX MMK06	VELUX FPK06
140cm	VELUX FFK08	VELUX FMK08		VELUX MMK08	VELUX FPK08
188cm			VELUX FFKF08

How do I find my VELUX window code?

Every VELUX window manufactured after 1968 has a plate in the top right-hand corner of the frame, which is invisible when the window’s closed. It provides important information about the window. Once you know your VELUX window code, you can use this to replace the existing window or order the right spare parts or new glazing.

The plate tells you the type, the size, the variant, and the production code, as shown below.

VELUX Window Code Plates

When shopping it’s important to remember that if you’re replacing the entire window then you can change the type of the window (GGL) but you can’t change the size (MK08). You can change the variant though as this refers to things like glazing, window finish, or opening type. So, for example, you could replace your GGL MK08 2070 VELUX window with a GGL MK08 3070 and this would replace a centre pivot white painted standard glazed window with a centre pivot pine finish standard glazed window.

It’s incredibly easy to shop for replacement VELUX windows by using our VELUX window selector. You can input all the information you have, decide which elements of your window you want to keep (size and centre pivot for example) and then see all windows you could purchase.

Don’t forget, your matching VELUX Blind. Use our VELUX blinds codes and sizes chart to find the right fitting blind for your project.

Now that you’ve found the right size VELUX window, read how to replace a VELUX window. Don’t forget, you can also give us a call or use the live chat in the bottom right for advice from our support team.