AluK Flush Sash Aluminium Windows

58BW Flush Window

A Flawless Flush Finish

Enjoy uncompromised style and performance with the new flush window from AluK

The 58BW Flush window combines minimal sightlines and maximum weather resistance with all the best features of the tried and trusted 58BW range: advanced performance, versatility and security.

A flawless, flush finish and slim sightlines makes this the perfect choice for contemporary new build and refurbishment projects. With a choice of slim sashes and a range of window configuration options, the 58BW Flush can be used to achieve a sleek, minimal aesthetic to suit any project

Flush Innovation


With smart features like the double rebate and friction stays on side-hung windows, the 58BW Flush offers greater protection against bad weather, even in more exposed locations


The thermally-broken design offers low U-Values down to 1.5 W/m2K, and a Window Energy Rating (WER) of B for higher energy-efficiency


The flush shadow line can be complimented with a choice of flat, putty line or stepped edge vent styles to suit the property


Fully test to PAS 24 and certified under the Secured by Design scheme, the 58BW Flush meets all safety standards for complete peace of mind

Configuration Options

The sharp shadow line of the 58BW Flush can be achieved with open-out sashes including French casement, top, side-hung, and fixed-lights can also have the flush shadow-line using dummy sashes.

Create a flush bay. You can also achieve the flush aesthetic in bay window styles, using our Bay Pole for bay windows of any angle, and our Corner Posts for 90° angle windows

Top Hung

French Casement