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Beautiful and efficient

Casement Windows

Using Smarts aluminium window systems, we produce a variety of casement window styles and designs. Our casement windows are energy efficient, safe and secure, attractive and durable. They offer excellent versatility and can be produced with top hung, side hung and bottom hung configurations.

Our casement windows are available in over 200 RAL colours with dual colour option available. We have a selection of profiles including flat, chamfered, and ovolo designs, suitable for traditional and contemporary buildings. Our aluminium casement windows are the perfect solution to all your installation requirements.

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Easy to Install

Bespoke manufactured to your exact specifications. Meet customer deadlines and boost your business.


Slimline frames for optimal natural light intake. Sleek contemporary finish with your choice of colour.


Fitted with best-in-class multi-point locking systems. Accredited by respected third party institutions.

Technical Downloads

Download our CAD files here. Find out profile information, glass safety and product specifications.

Strong and durable

Aluminium: The choice of the future

Aluminium casement windows are strong and durable. They are resistant to rust and corrosion and are an excellent choice in coastal areas due to their salt resistant finish. They offer slim sight lines giving a less visible frame with a larger glass area for wider uninterrupted views. Aluminium is virtually maintenance free and will last for decades. It is sustainable, 100% recyclable, and environmentally friendly.

At Fenster, we have extensive industry experience and product knowledge. Whatever your requirements, we can offer advice on the best product to meet your needs. When you want quality every time, choose Fenster Architectural Glazing.

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Trusted and reliable

Why choose us

Innovative design solutions for top end aluminium applications

Friendly, approachable, knowledgeable team

Efficient trade supply service

High quality products manufactured to your exact requirements

Excellent industry reputation for concise and contemporary glazing solutions

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fully accredited


BSI Accreditation

BSI is a global business standards company. They help businesses to improve performance, meet regulatory requirements, and develop in today’s competitive arena. They work with organisations across the world in over 180 countries. Their clients range from globally recognised brands to small local businesses. They are accredited by several international organisations operating at the highest level of quality and service.

BSI collaborate with architects, designers, and contractors to promote excellence across the construction sector. They offer BIM (Business Information Modelling) to support design and architectural requirements and offer advice to ensure that all work complies with industry legal requirements. By working with BSI, Fenster gain both a technical and commercial advantage, ensuring they are always at the forefront of industry developments and regulations.

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