Our premium windows bring unrivaled performance, unmatched durability and captivating design. Explore the new features that will take your home to the next level. Schedule your window consultation today!

What we do & who we are

At OKNOPLAST we are proud to be a leading manufacturer of premium quality windows and doors. We are dedicated to providing our customers with the best products and services available. For years on end, we’ve been working diligently to give you more features for windows, to bring you safer, easier-to-use, more beautiful, and more efficient products. Now, we want to help take your home to the next level.




Choose from over 50 different colors and a variety of shapes featuring modern, minimalist profiles with sharp edges to add your personal touch and create a true masterpiece.

more simple

Our simple yet smart solutions, innovative technology, and intuitive operation are the perfect fit for your design, surpassing customer expectations in both performance and functionality.


Large windows enhance the aesthetic appeal, while a diverse range of grille options in varying widths and colors allow for endless possibilities in creating a distinctive interior

New Functionality



You can easily open and securely close the window with just one hand. Simple and effortless, with no additional locks or cranks. Our windows can be fully opened inside, so you don’t need to lift them up.


It’s enough to tilt the window to let in some fresh air! This great feature allows you to have your window only partially opened which helps save a lot of space. Or you can use micro ventilation which allows airflow without opening the window.


If you want to clean your windows, you can open the windows to the inside of the room and effortlessly clean the whole window from inside and outside. It’s easy, comfortable, and also safe!

High Performance



Enjoy maximum thermal insulation and energy savings with our top-of-the-line windows. Made from the highest-quality materials using the latest technologies, our products offer superior performance and unmatched efficiency.


Our advanced glass sound absorption and double gasket system are designed to keep out noise from busy streets and noisy neighbors, ensuring a serene and comfortable living environment.


Sometime sunlight can be uncomfortable in our homes, but this problem can be easily solved with special glazing packages for windows that feature LOW E coating. Our sun-filtered glass reduces energy permeability, preventing overheating and ensuring a comfortable living environment.


Send a request

Please contact us at the number below for the fastest possible service. If you prefer to send us an inquiry through our form, please allow up to 48 hours for a response.


20 Commerce Dr. Suite 135, Cranford, NJ 07016


Phone: +1 908 905 3203
E-mail: info@oknoplast.us

Open hours

Monday to Friday: 8am – 4pm


OKNOPLAST is a company with almost 30 years of experience in window joinery production. Our own factories, Product Development Department, in-house laboratory and qualified specialists are the guarantee of high product quality. We follow the development of technology, constantly introducing innovative solutions to our windows. As a result, you will find products with exceptional parameters on offer, including systems adapted, among others, to the restrictive standards of passive construction.
OKNOPLAST products are manufactured to individual customer orders. Each window is a personal choice, which is why we need four to five weeks to manufacture it. We also constantly strive for efficient, safe and fast delivery, which currently also takes about 4 to 5 weeks. All in all, the total production and delivery time is closing in on about 8 to 10 weeks.
We strive to provide you with all-in-one products and services because we know you want to achieve more in your everyday life. Service is handled by our Sales Partners, a list of which can be found here: https://oknoplast.us/contact/#dealer After a service request, a Sales Partner will contact you immediately and discuss the details of any possible work. All this is to ensure that our products bring you joy and peace of mind in their use.
Of course, all OKNOPLAST systems come with a 10-year product guarantee. As part of the guarantee, we offer you full counselling support in the use of our products and service assistance.
OKNOPLAST systems are "tailor-made" to individual needs. The price depends on the selected window size, additional packages increasing their aesthetic value, safety or functionality. If you wish to obtain a professional window quotation, please contact your chosen sales partner, a list of which can be found here https://oknoplast.us/contact/#dealer.
OKNOPLAST systems are made from the durable and safe raw material uPVC. This is a special blend of plastic components that is resistant to distortion even after many years of use. uPVC is a safe material for health. It ensures optimum air permeability and is free of harmful chemicals.
All OKNOPLAST systems are manufactured to individual orders. This means that you can personalise each window in any way you wish, starting with its dimensions and finishing with aesthetic details. Among the retrofit elements, you can choose: accessories affecting the safety of the window, its functionality and aesthetics. You can individually choose: the shape of the window, the colour of the veneer (the whole RAL palette is in front of you!), the type of the handle, the mosquito net, the muntins and many, many others.
You can find out about and order OKNOPLAST products from our trade partners throughout the country. We have put all the points of contact together with their contact details here: https://oknoplast.us/contact/#dealer. If you need help in ordering windows and you have problems with finding the closest Oknoplast dealer - please contact us by e-mail: info@oknoplast.us. You are welcome!
OKNOPLAST factories are located in Poland and Spain. The production area is currently 124,000 m2, and the number of windows we produce per year is 1.3 million windows. From here, our systems are supplied to 19 markets including Poland, Italy, France, Germany, the USA and many others.
OKNOPLAST systems meet the restrictive requirements of passive construction. In our offer you will find models, whose U-factor makes the window perfectly complementary to the passive design, and even exceeds the stringent norms of this type of construction.
At OKNOPLAST, we attach particular importance to the certification of our products. Thanks to this, we are sure that we are putting into your hands windows that will withstand any conditions and meet high environmental or personal requirements. OKNOPLAST systems have many certificates, including: thermal certificates such as NFRC (National Fenestration Rating Council) , Energy Star, PHIUS (Passive House Institute US) and structural certificates such as AAMA-ASTM Certification or HVHZ Miami Dade (for Impact Windows).
We are constantly working to reduce our carbon footprint and create products that are more environmentally friendly. That's why when we create modern window systems, we strive to design increasingly narrower profiles to use less uPVC compound in their manufacture. We are also involved in local efforts to protect and care for the environment in the long term. In addition, each of our window components, once disassembled, can be recycled!



Find inspiration for you in our curated collection of window and door systems.