
NIAGARA Round System - gutter components with a classic, semicircular profile. Steel internal corner with a 135° angle

The 135° internal corner is used to connect gutters in areas where the roof forms an obtuse interior angle. This component allows the gutter system to be properly routed in more complex architectural layouts.
The product is made of coated steel, which ensures resistance to corrosion, mechanical damage, and weather conditions. The durable coating protects the surface and helps it retain its attractive appearance for a long time.
The use of a 135° internal corner ensures a watertight connection between gutters and a seamless fit with the other components of the rainwater drainage system.

The wide range of configurations and sizes available for the NIAGARA Round system (polyurethane coating) ensures its versatility and adaptability to various types of buildings. The choice of system depends on the type of building and the roof area. Depending on the roof area, dual-pipe systems can be used to optimize water drainage efficiency. The systems that offer the widest range of options are: NIAGARA Round (no fascia) and NIAGARA Galvanized
Single-Family Housing
Industrial Construction
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.
[NEW] Polyurethane Matte

Polyurethane Glossy









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.
Accordingly, liability for color is limited to a single shipment.
Therefore, when reordering sheet metal for a specific batch, please be sure to indicate on the order form or inform your sales representative that this is a follow-up order and to provide a color sample.
To ensure color consistency between sandwich panels and other components, such as flashings, they should be ordered from a single supplier.
The corner fitting allows gutters to be joined at the corners of a building. The standard angle for an internal corner is135°. Unique extrusion technology makes it possible to produce corner fittings (135°) without the need for welding, which significantly enhances the building’s aesthetic appeal. Our product line also includes external corners with a135° angle. All are made from the highest-quality materials and with high precision, allowing for quick and easy assembly.
System rynnowy NIAGARA, dzięki szerokiej gamie rozmiarów, a także dedykowanym elementom umożliwia szeroką gamę dostosowywania systemu do potrzeb realizacji inwestycji. W celu zapoznania się z pełną gamą asortymentu i dostępności zachęcamy do skorzystania z poniższego zestawienia:
TABELA DOSTĘPNOŚC I ROZMIARÓW: NIAGARA OKRĄGŁA BEZ MASKOWNICY
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