Premium Aluminium Casement Windows

We offer high quality, sleek Aluminium casement windows to compliment your property. With our thermally broken sections and slim sightlines, you are guaranteed to be pleased with a Bi Folding Superstore window. Made from the same aluminium sections as our other product ranges to enhance aesthetics across your property and give a consistent look when mixing products. 

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Why Use Our Windows

Industry Leading Aluminium Systems

Unbeatable Lead Times from 5 Days

Easy On Site Installation

Aluminium Casement Windows With Thermally Broken Profiles

  • Thermally broken windows that suit side-hung and top-hung options in an outward opening style 

  • Thermal break zone of 32 mm and a transmittance Uw from 1.0 W/ m²K. Super thermal efficiency that meet building regulations.



Mazuli Casement Profile
Cortizo Logo

Partnering With The Best

Our Aluminium suppliers use Cortizo extrusions which are known throughout the Industry as a market leader. This gives us peace of mind, that every product we supply is manufactured to the highest quality.

Standard Colours

Special Colours



Any RAL Colour

Anthracite Grey

Woodgrain Effects

Take A Look At The Specifications

Maximum Sash Dimensions

Slim sash (side hung)
   Width (L) 950 mm
   Height (H) 1,300 mm

Slim sash (top hung)
   Width (L) 1,200 mm
   Height (H) 1,300 mm

Heavy duty sash (side hung)
   Width (L) 750 mm
   Height (H) 1,750 mm

Heavy duty sash (top hung)
   Width (L) 1,800 mm
   Height (H) 1,800 mm

Maximum Sash Weights

Maximum sash weight
   Side hung slim sash: 35kg
   Top hung slim sash: 50kg

  Side Hung Heavy duty sash: 42 kg
   Top Hung Heavy duty sash: 100 kg

Other Specifications


  • Frame 70mm
  • Sash 70mm

Glazing Units

  • Minimum : 23mm
  • Maximum : 44mm

Profile Thickness

  • Window 1.6mm

Polyamide Strip Length

  • 32mm
Mazuli Casement Window

 Window Delivery Information and Lead Times

Once you place an order we will notify the manufacturer and confirm a production slot and delivery time frame. From here on in your product is on its way to you. All windows are delivered to you fully made unless you request otherwise. Please let us know when ordering if this is the case.

Please ensure that suitable access is available for the items ordered and that a suitable team of people are available on the delivery day. 

Bi Folding Superstore pride ourselves on having a fully transparent ordering routine and partnering with our supplier means a smooth process throughout. We will provide you with a fixed delivery date that will NOT change.

Our suppliers nationwide delivery network uses only their own delivery vehicles. They remove all risks by having no need for third-party carriers. Our casement windows are sent directly from the factory for a GUARANTEED FAST delivery.

Unglazed Systems

Standard Colours

5 Working Days

Glazed Systems

Standard Colours

10 Working Days

RAL Colours

2 Weeks

Woodgrain Colours

4- 6 Weeks

Want to discuss your project?
Call now on 01633 740631 or email us to start your project the right way