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Alumaster window accessories support the correct installation, adjustment, and servicing of joinery, ensuring structural stability, smooth operation, and long-lasting tightness. The offer includes solutions tailored to leading profile systems, making it easy to build a consistent and repeatable standard for production and installation.
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Certified post connectors ensure rigid, repeatable profile connections in window structures, stabilizing corner geometry and effectively transferring loads. We offer K-type (cross connections) and T-type (straight connections) solutions in ZnAl or PVC versions, with dedicated sealing accessories, which facilitate high tightness and durability. The connectors are precisely matched to popular profile systems, making installation quick and the result aesthetic and reliable over a long period of use.


Adjustment keys are practical tools for precise adjustment and servicing of window fittings – from pressure pins to scissors and Multi-Matic system components. The range includes TX15/TX20 keys for adjusting i.S. pins, a VZ key for scissors, and accessories to support the installation of connectors, allowing you to quickly adjust the pressure, geometry, and smoothness of the sash. Ergonomic design and compatibility with popular systems reduce installation time and minimize the risk of errors in production and service.


Base glazing washers (snap-on, with stops) are used to properly support the glazing unit and maintain tightness; they come in various heights and for different glass thicknesses. Thanks to standardized dimensions, installation is quick and repeatable, and the window retains its load-bearing and insulation parameters for years.
MULTI POWER washers ensure proper support and geometry of the bottom/top hinge, stabilize the sash, and facilitate precise adjustment – they are durable, gray “mass-colored,” with left/right adjustment. The washers are an integral part of concealed hinges.
With our warehouse located in central Poland and large stock levels, we fulfill orders on time, even within 48 hours. We minimize production downtime thanks to the constant availability of key components.
We will prepare an “all-in-one package” for you – complete threshold systems, window fittings, and other necessary components. Everything you need for woodwork production in a single delivery.
We will help you choose the perfect solutions for your production, including non-standard ones. We will conduct an audit, provide instructions, and share our experience—at no additional cost.
We will provide you with solutions that ensure permanent tightness without the need for milling and installation barriers. We will help you choose certified systems that comply with the requirements of premium, passive, and renovation construction. This will reduce the number of complaints, improve the quality of installation, and increase customer satisfaction. We will help you choose the perfect solutions for your production, including non-standard ones. We will conduct an audit, provide instructions, and share our experience at no additional cost.
Uncompromising tightness – solutions ensuring permanent tightness without the need for milling or creating architectural barriers. We provide certificates for watertightness, acoustics, and passive house.
We deliver on time and according to the order.
Products undergo rigorous quality control
Trust translates into long-term cooperation
Proven effectiveness in practice by thousands of entrepreneurs
By joining our B2B platform, you have all your products and documents in one place – faster, more convenient, and always up to date.
Quick access to the full range – always with up-to-date prices and specifications
Easier purchase management – organize orders and documents in one panel
Repeat orders in just a few clicks – save time in your daily work
Simple document management – invoices, statuses, and cooperation history always at your fingertips
From the initial order to installation and ongoing service – we show you what happens next, step by step.
You are purchasing a product
You choose the solution that suits your project
Order verification
We check that the order is complete and well secured.
We ship
We deliver your order quickly, within 48 hours
We provide on-site support
We check the correctness of the installation and provide practical tips.
You choose the solution that suits your project
We check that the order is complete and well secured.
We deliver your order quickly, within 48 hours
We check the correctness of the installation and provide practical tips.
You receive support from experts who will help you choose the best solution for your project.
We will provide a complete set of materials to ensure smooth installation and operation.
We provide your team with practical knowledge so that they can act confidently and independently.
We check the correctness of implementation on site to ensure that everything is working according to plan.
We respond within 24 hours on business days. By email or phone, whichever is more convenient for you.
Your data is secure
We support designers in creating safe, comfortable, and visually consistent spaces.
Our low thresholds, interior products, and minimalist forms fit in with modern standards of aesthetics and functionality—without barriers and without technological compromises, increasing the usability of any space.

Właściciel firmy X
I recommend them, excellent contact, very friendly, competent service. Everything exactly as it should be. Thank you and see you soon.

Właściciel firmy X
I must say that the service at this company/customer contact – at a very high level – helped identify the damaged fitting, found it in stock, and organized shipping very quickly. I am extremely satisfied.
Właściciel firmy X
What does the implementation process for your production solutions look like? The implementation process is simple, transparent, and fully tailored to your technology. We start with a free technical consultation, during which we learn about your needs, the type of joinery, and production requirements. Based on this, we propose the best solution – dedicated to each PVC, ALU, wood, and steel joinery system. We then provide a complete set of materials: technical documentation, assembly diagrams, and implementation instructions. If you need it, we also offer:
What does the process of implementing your solutions into production look like?
The implementation process is simple, transparent, and fully tailored to your technology. We start with a free technical consultation, during which we learn about your needs, the type of joinery, and production requirements. Based on this, we propose the best solution – dedicated to each PVC, ALU, wood, and steel joinery system.
We then provide a complete set of materials: technical documentation, assembly diagrams, and implementation instructions. If you need it, we also offer:
What does the process of implementing your solutions into production look like?
The implementation process is simple, transparent, and fully tailored to your technology. We start with a free technical consultation, during which we learn about your needs, the type of joinery, and production requirements. Based on this, we propose the best solution – dedicated to each PVC, ALU, wood, and steel joinery system.
We then provide a complete set of materials: technical documentation, assembly diagrams, and implementation instructions. If you need it, we also offer:
What does the process of implementing your solutions into production look like?
The implementation process is simple, transparent, and fully tailored to your technology. We start with a free technical consultation, during which we learn about your needs, the type of joinery, and production requirements. Based on this, we propose the best solution – dedicated to each PVC, ALU, wood, and steel joinery system.
We then provide a complete set of materials: technical documentation, assembly diagrams, and implementation instructions. If you need it, we also offer:
What does the process of implementing your solutions into production look like?
The implementation process is simple, transparent, and fully tailored to your technology. We start with a free technical consultation, during which we learn about your needs, the type of joinery, and production requirements. Based on this, we propose the best solution – dedicated to each PVC, ALU, wood, and steel joinery system.
We then provide a complete set of materials: technical documentation, assembly diagrams, and implementation instructions. If you need it, we also offer:
What does the process of implementing your solutions into production look like?
The implementation process is simple, transparent, and fully tailored to your technology. We start with a free technical consultation, during which we learn about your needs, the type of joinery, and production requirements. Based on this, we propose the best solution – dedicated to each PVC, ALU, wood, and steel joinery system.
We then provide a complete set of materials: technical documentation, assembly diagrams, and implementation instructions. If you need it, we also offer:
What does the process of implementing your solutions into production look like?
The implementation process is simple, transparent, and fully tailored to your technology. We start with a free technical consultation, during which we learn about your needs, the type of joinery, and production requirements. Based on this, we propose the best solution – dedicated to each PVC, ALU, wood, and steel joinery system.
We then provide a complete set of materials: technical documentation, assembly diagrams, and implementation instructions. If you need it, we also offer:
What does the process of implementing your solutions into production look like?
The implementation process is simple, transparent, and fully tailored to your technology. We start with a free technical consultation, during which we learn about your needs, the type of joinery, and production requirements. Based on this, we propose the best solution – dedicated to each PVC, ALU, wood, and steel joinery system.
We then provide a complete set of materials: technical documentation, assembly diagrams, and implementation instructions. If you need it, we also offer: