
NIAGARA Square is a modern drainage system design tailored to modernist architecture. The Concealed system variant is an advanced solution aimed at those seeking unconventional architectural solutions. NIAGARA Square /Concealed system/ utilizes components from the basic system (Square gutters) and combines them with vertical elements permanently installed in the facade (PVC pipe). This is a well-thought-out and refined solution that, on the one hand, offers excellent drainage performance, while at the same time creating the impression that the house has no gutter system. Like all NIAGARA systems, the Concealed system is made of the highest-quality materials, with components that fit together perfectly. The appropriate accessories (insulation, clamps, sleeves, etc.) ensure a watertight seal at the joints between gutters and drain pipes.
Detailed information is provided below
We also encourage you to explore our full range of square gutters:

The contemporary design of the gutter system perfectly complements modernist buildings. The metal gutter system offered by our company is a complete gutter system. It was designed with aesthetics, functionality, and—above all—durability in mind.
Our technology has enabled us to create products that impress not only with their excellent technical specifications but also with their visual appeal. The quality of our products is QUALITY TO THE POWER OF TWO.
NIAGARA Square is available in several variants, including the Concealed system option, which fully hides the pipes within the building’s facade. The only external elements visible are the gutters and other horizontal drainage components. This is the most concealed version of our systems, creating the visual impression that the building has no gutter system at all, while still benefiting from an efficient and modern drainage system. In this variant, for material and technical reasons, a PVC drain pipe is used (for ventilation and low temperatures).

The system components are manufactured from the highest-quality steel, which is galvanized and coated on both sides with polyurethane (50 μm).
By using these materials, we can be sure of color stability as well as high resistance to weather conditions. Polyurethane is characterized by very high resistance to corrosion and color fading compared to the commonly used PLASTISOL.
Frontal supporting hook with fastener (below the under bending)
Long supporting hook with fastener (below the under bending)
The versatile application of NIAGARA steel gutters makes them available in many configurations, tailored to various types of buildings. The choice of system depends on the type of construction and the roof area. Depending on the roof area, dual-pipe systems can be used to optimize water drainage efficiency.
It is worth noting that not all of our NIAGARA gutter systems are available in every configuration. The systems that offer the widest range of options are: NIAGARA Round and NIAGARA Galvanized
Single-Family Housing
All colors in the NIAGARA Round system are available in top-quality polyurethane coatings that ensure long-lasting performance and reliability. This is particularly important for a gutter system that is constantly exposed to prolonged contact with water and harsh operating conditions.


The Pruszyński Company guarantees that each individual order will be produced in the same color (shade). However, due to the complexity of the coating processes, slight variations in shade may occur between individual shipments.
Therefore, liability for color is limited to a single delivery only.
Therefore, when reordering sheets for a specific batch, please mark on the order or inform the Sales Representative that this is a continuation of an order and provide a color sample.
To ensure color consistency of sandwich panels with other elements, such as flashings, they should be ordered from a single supplier.
Łukasz Byśkiniewicz and Daniel Siatkowski took 2nd place in the Valvoline Małopolska Rally. After a fierce battle and nearly 150 km of special stages, the TVN TURBO RALLY TEAM crew finished just 7.3 seconds behind the winners, solidifying their position as runners-up in the RSMP.
Read moreKrzysztof Pruszyński, president of the Pruszyński Company, was awarded the prestigious title of “Mazovian Gentleman D.” in the “Friend of People with Disabilities” category. This award recognizes the entrepreneur’s long-standing commitment to the development of local social, educational, and inclusion initiatives.
Read moreThe Blachy Pruszyński Company is once again among the highest-rated construction brands in Poland. In the 2026 Construction Brand of the Year Ranking, the company won three awards and received the “Tradespeople-Friendly Brand” distinction. This is yet another confirmation of the quality of its products, which are highly valued by contractors and roofers.
Read more