Experience Unparalleled Quality with Our uPVC Windows

Windows UPVC

Windows UPVC

Are you in search of the perfect uPVC windows for your home? Do you prioritize maximum thermal and acoustic insulation? Look no further. At GM PLAST Window and Door Factory, we offer top-quality uPVC windows on the market, at the most competitive prices. With over 25 years of experience as window manufacturers, we design our windows with a focus on providing maximum comfort and safety. They are available in various modern styles that complement any home. Our windows are also among the most energy-efficient, thanks to the innovative technology in the systems we employ. They ensure excellent thermal insulation, allowing you to save on heating costs for your home.

Our windows feature a 7-chamber UPVC system with a central gasket and a frame depth of 88 mm! In simple terms, the deeper the frame, the more insulated the window. The central gasket is a new innovative solution used in our systems, designed to provide additional room insulation and ensure better thermal and acoustic performance. The windows can be applied to passive houses according to ift-Richtlinie WA-15/2-Thermal insulation coefficient Uf=0.95 W/(m²K). Our windows include a thermally broken UPVC threshold for barrier-free access.

Choose GM PLAST for superior quality, energy efficiency, and cutting-edge design. Upgrade your home with UPVC windows that not only enhance its aesthetic appeal but also contribute to a warmer, more energy-efficient living space. Contact us today to explore the possibilities of our UPVC window solutions.

With us, your home can look like this too


Reduce your electricity bills by choosing Kömmerling 88 UPVC windows by up to 30% thanks to 7 chambers, a central seal and an installation depth of 88 mm!


Our uPVC windows are not only crafted from high-quality materials but also boast exceptional strength and durability. Infused with contemporary aesthetics, they elevate the style quotient of any building. Tailored to individual preferences, these windows are available in a spectrum of colours and can be customized to fit any opening size.Experience the pinnacle of energy efficiency as our UPVC windows effortlessly retain warmth during winter, providing a cozy haven. GM PLAST's UPVC windows are synonymous with comfort, security, and a modern design that caters to diverse needs. Choose from a range of styles and patterns that align with your unique vision.In addition to offering top-notch quality and the latest technology, our uPVC windows stand out as the warmest and most optimal choice for your home. When you buy directly from us, the manufacturer, without intermediaries, you can be assured of the lowest price. We handle the entire process - from delivery to professional installation. Opt for our plastic windows and embark on a journey of savings on your utility bills! At GM PLAST, we're committed to delivering not just windows but a seamless experience of comfort, style, and efficiency for your home.

Why choose our uPVC windows?

  •  They are robust and solid
  • Rapid production
  •  Equipped with Roto NX branded hardware
  •  They are aesthetically pleasing and will fit into any interior
  •  Lead-free profiles, making them environmentally friendly
  • They have a very good price/quality ratio 
  • Easy to maintain (care and maintenance)
  •  Kömmerling is a premium brand with over 100 years of history
  • High-quality burglary protection (RC 2 or RC 3)
  •  Thermal insulation Uw=0,72 W/(m²K) which means they are energy efficient
  • Choice of double or triple glazing packages from 16 to as much as 50 mm thick
  • Improved quality of life through sound insulation of 35 db
  •  Simple and professional installation thanks to a wide range of additional profiles
  •  Our windows are characterised by high operating comfort, exceptional functionality and a long service life
  • The micro-ventilation integrated as standard in the hinge means that no additional frame component is required and provides additional ventilation, which increases living comfort.

Made-to-measure uPVC windows

Choose your system:

Kömmerling 76 AD

 the flagship economic product for the most demanding

Kömmerling 76 MD

 6-chamber profile designed for maximum energy saving and acoustic insulation of the building

Kömmerling 88 MD

 7-chamber profile with passive house capability, large glazing spectrum, high user comfort, easy care, barrier-free, thermally divided threshold - a system that is ahead of the standards.

Kömmerling 70 AD

Most optimal installation depth.

The systems are subject to a variety of inspections, resulting in CE marking and declarations and certificates for all variants.

Don't wait, contact us now for a quote and our specialists will respond within a maximum of 24 hours.

We will make you feel at home

At GM PLAST, we redefine excellence in the realm of uPVC windows. With over 25 years of dedicated craftsmanship, we stand as a leading manufacturer committed to delivering unparalleled quality and innovation. Our uPVC windows are a testament to strength, durability, and modern aesthetics. Crafted from high-quality materials, they not only enhance the style of any building but also provide exceptional energy efficiency, ensuring a comfortable and inviting living space. What sets us apart is our dedication to customisation. Our uPVC windows come in a spectrum of colours and styles, tailor-made to fit your unique vision. The result? A seamless blend of style, functionality, and energy efficiency. Choosing GM PLAST means choosing direct access to the manufacturer, eliminating unnecessary intermediaries. This guarantees not only the finest quality but also the most competitive prices in the market. From precise customization to professional installation, we handle every aspect of the process, ensuring a hassle-free experience for our customers. Trust GM PLAST for uPVC windows that go beyond expectations, contributing to a warmer, more energy-efficient home. Elevate your living spaces with the finest uPVC windows. Choose GM PLAST - where quality, innovation, and customer satisfaction converge.