Four aluminium systems. Four ways to open. Every one built from the engineering drawings.
Four rooms of one house, rendered to the drawings. The 84 is shown as a project combination with fixed lights; standard sizes and data are on each product page.
Fixed lights, sliding windows and larger combinations are made to project on the same profile series — ask us with your opening schedule.
Every model is built from the engineering drawings: profile sections, hardware and glazing. Open the sash, switch the glass, look at the details up close.
Air, water and wind-load performance stated per configuration, with the test report for that configuration.
Explore
Quality, environmental and safety management certified at Zhejiang Baoye Curtain Wall, the company behind Neisen.
ExploreEvery Neisen window uses the same named components, several from European specialist suppliers.

Ultra-high-precision extrusions engineered for wind load

High-performance polyamide strip for better thermal insulation
Technoform (Germany) · Xingao
Automotive-grade safety glass: tempered, Low-E, warm-edge, multi-cavity with inert gas

Honeycomb foamed composite gasket of the grade used on high-speed rail
Supplier: Haida
HOPPE handles; Kinlong and Liphing multi-point locking and hinges
Handles: HOPPE, Germany
CNC machining centres cut and drill every profile to system tolerances

Corner cleats and two-component adhesive make a sealed, square corner

Gaskets fitted in one run with moulded corners, pressed in around the sash

Powder coating or anodising on the finished frame, in-house, dual colour to order