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Aluminum Windows Manufacturer for Commercial and Residential Projects

Custom Aluminum Window Solutions for Distributors, Contractors, Builders, and Project Buyers

Explore custom aluminum windows including sliding, casement, folding, awning, fixed, hung, curved, and bay window types. We support project sizes, frame colors, glass options, hardware, OEM/ODM production, export packing, and factory-direct quotation for global building projects.

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Durable Window manufactures custom uPVC casement windows for contractors, developers, distributors and project buyers.

Our casement windows can be produced according to project drawings, window schedules and market requirements. We support inward opening, outward opening, single sash, double sash, fixed combination, flush casement style, double glazing, custom colors, hardware selection and OEM packaging.

For project buyers, a good uPVC casement window is not only about the frame. It also depends on profile strength, sash size, glass weight, steel reinforcement, sealing system, hardware quality and installation conditions.

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Product Gallery

Product front view

Open sash view

Profile section

Hardware / handle detail

Project application photo

Double glazing detail

Key Specifications

Item	Options
Product Type	uPVC Casement Window
Opening Type	Inward / Outward
Sash Type	Single sash / Double sash / Fixed + casement
Profile	Multi-chamber uPVC profile
Profile Depth	60 mm / 70 mm / project-based
Reinforcement	Galvanized steel reinforcement
Glass	Single / Double / Triple glazing
Common Glass	5+12A+5 mm double glazing
Optional Glass	Low-E / Laminated / Tempered / Argon-filled
Sealing	EPDM gasket / Triple sealing option
Hardware	Handle, hinges, multi-point lock
Color	White, black, grey, brown, wood grain
Optional Accessories	Mosquito mesh, restrictor, safety lock
Application	Villas, apartments, hotels, residential projects

Types of uPVC Casement Windows

Double Casement Window

Single Casement Window

Fixed Casement Window

Double Casement Window

Single Casement Window

Fixed Casement Window

Inward and Outward Opening uPVC Casement Windows

uPVC casement windows can be designed as inward opening or outward opening.
Inward opening uPVC casement windows are easy to clean and adjust from inside the room. They are commonly used in apartments, villas and residential projects.
Outward opening uPVC casement windows help save indoor space and are suitable for projects where interior layout is limited.
The final choice depends on building design, room function, local climate, safety needs and installation conditions.

Flush uPVC Casement Windows

Flush uPVC casement windows are designed so that the sash sits more level with the outer frame, creating a cleaner and more modern appearance.
They are commonly used in modern villas, apartments and premium residential projects. Flush casement designs can be combined with double glazing, Low-E glass, black profiles, grey profiles, wood grain finish and multi-point locking hardware.
For flush casement windows, profile compatibility, sash size, gasket compression and hardware selection should be checked before production.

White, Black and Custom Color uPVC Casement Windows

White is the most common color for uPVC casement windows, but many projects also require black, grey, brown or wood grain finishes.
Available color options include:
White uPVC casement windows
Black uPVC casement windows
Grey uPVC casement windows
Brown uPVC casement windows
Wood grain uPVC casement windows
Laminated color profiles
For black or dark-color uPVC casement windows, we recommend checking window size, local temperature, solar exposure, steel reinforcement and installation gap before production.

Double Glazed uPVC Casement Windows

Double glazed uPVC casement windows are a common choice for energy-saving and sound reduction projects.

A typical glass configuration is:
5 + 12A + 5 mm insulated glass

Optional upgrades include:
Low-E glass
Argon-filled insulated glass
Laminated glass
Tempered glass
Triple glazing
Warm edge spacer

For hot climates, Low-E double glazing is often recommended to reduce solar heat gain and improve indoor comfort. For noisy areas, laminated glass or thicker insulated glass can improve sound insulation.

uPVC Casement Window Sizes

We support custom uPVC casement window sizes based on project drawings, wall openings and window schedules.

When confirming sizes, we check:
Sash width and height
Glass weight
Opening direction
Wind pressure
Hardware load
Steel reinforcement
Installation gap
Mullion and transom design

Large casement sashes should be reviewed carefully to avoid sash sagging, difficult operation or hardware overload.

uPVC Casement Window Handles, Hinges and Locks

Hardware affects the daily operation and lifespan of uPVC casement windows.

Our hardware options can include:
Window handles
Adjustable hinges
Multi-point locking system
Locking points
Safety restrictors
Corrosion-resistant hardware
Upgraded hinges for large sashes

For large windows, high-frequency use or coastal projects, upgraded hardware is recommended. A proper handle, hinge and locking system can improve sealing pressure, security and long-term operation.

Sealing and Drainage Design

A good uPVC casement window should not only close smoothly but also seal properly.

Our window design can include:
EPDM gasket
Triple sealing option
Precision welded corners
Proper sash-frame overlap
Drainage channels
Weep holes
Multi-point locking compression

Good sealing helps reduce air leakage, dust entry, water leakage and outdoor noise. Drainage holes should not be blocked during installation.

uPVC Casement Window Price Factors

The price of uPVC casement windows depends on the final configuration.

Main factors include:

Price Factor	Impact
Window size	Larger sizes need more profile, glass and reinforcement
Glass type	Low-E, laminated or triple glazing increases cost
Profile system	Different profile depth affects price
Hardware	Premium handles, hinges and locks cost more
Color	Black, grey and wood grain usually cost more than white
Reinforcement	Large or windy projects may need stronger steel
Quantity	Bulk orders usually support better unit cost
OEM packaging	Private label packaging may affect total cost

For an accurate quotation, please send window sizes, quantity, glass requirement, color, hardware level and project country.