Cube Aluminium Windows

Slim Frames

The design of the window mimics the sight lines of the original steel-framed windows – 68mm frame depth makes it perfect as a replacement window, that fits within the existing plaster line

A-Rated thermal efficiency

It’s the perfect combination of exceptionally slim line window frames and the highest levels of performance

200+ RAL colours

Whatever colour finish you desire, you’ll be able to find it within our RAL colours range, complete in wood grain and metallic effects


Aluminium frames can be polyester-powder coated in a wide range of RAL colours, or can feature a metallic or anodised finish.

Our standard range of RAL colours covers some of the most popular customer choices for achieving that premium look. Though if you're looking for something different choose from a wade variety of RAL palette options, metallic, anodised or even woodgrain finishes.

CUBE aluminium windows in anthracite grey from Grabex Windows


Currently our Showroom remains closed until further notice. We look forward to welcoming you as soon as it is safe for all of us to reopen

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