Vinyl Windows Manufacturer for Builders | Bulk Supply & New Construction Projects
As a source factory deeply rooted in the North American market, UWG is a professional vinyl windows manufacturer and window factory supplying high-performance vinyl windows (uPVC windows), sliding windows, and casement windows directly to builders, developers, and dealers. By cutting out every layer of middleman markup, we deliver U.S. supermarket-grade quality at factory-direct prices up to 50% below local retail for your residential and commercial projects. Whether you need standardized in-stock inventory for fast turnaround, custom windows engineered from your blueprints, or dedicated new construction windows service, our local warehousing, low minimum order quantities, and full-chain delivery management keep your project timeline on track.
Vinyl Window Types: Double Hung,
Sliding, Casement & More
Our vinyl window collection includes a full lineup of classic styles — Double Hung, Single Hung, Casement, Sliding, and Picture Windows — engineered to fit the varied façade requirements of residential and commercial projects across North America. Every product is built with high-quality fusion-welded construction and a durable multi-chamber structure; frame surfaces can be finished with ASA co-extrusion, laminate films, and custom color options, giving your project a choice of black, dual-tone, or other custom exterior finishes.
Double Hung Vinyl Windows
Double Hung Vinyl Windows are the most popular house windows style in North America. Tilt sashes let you clean the exterior glass easily from inside. A heavy-duty pocket sill strengthens both the water and air seal, eliminating leak-related callbacks down the road, and a built-in fall-prevention safety lock meets safety codes for high-rise residential and bedroom applications.
Single Hung Vinyl Windows
Our Single Hung Vinyl Windows keep the classic American look while minimizing purchasing and maintenance costs — ideal for large-volume new-build housing and townhome & multifamily projects. Only the bottom sash tilts and slides for ventilation, while the upper sash uses a sealed, fully fixed design for superior structural stability and long-term draft protection.
Vinyl Casement Windows
Our Vinyl Casement Windows achieve a tight seal with a continuous polyethylene rigid seal. A full set of stainless steel hinges and a roto-type crank operator keep operation smooth for years, even on large sashes in high wind-load environments — making them a great fit for kitchens and green building projects with strict IECC energy-code requirements.
Sliding Vinyl Windows
Every Sliding Vinyl Windows unit comes standard with corrosion-resistant two-wheel brass rollers for quiet, smooth operation year after year. Removable sashes make cleaning easy, and this style is widely used in modern balconies, living rooms, and any space calling for wide, open sightlines — a low-maintenance, high-value choice for wide façades and large glazing areas in modern homes.
Vinyl Picture Window
Our Vinyl Picture Window (Vinyl Fixed Windows) is built for spaces that don't need to open — maximizing daylight and energy efficiency to ENERGY STAR standards. The seamless fixed-frame structure greatly reduces air infiltration and improves insulation, sound control, and water resistance. It's an excellent main window for open-concept living rooms and view-focused rooms, or paired with operable windows in a combination window design.
UWG delivers high-quality Vinyl Windows and high-performance uPVC Windows straight to your jobsite through our streamlined, worry-free logistics network. Backed by our own Window Factory manufacturing capability and local warehouses in Houston, TX and Oklahoma City, OK, we guarantee flexible low minimum order quantities, precise staged on-site delivery, and fast local restocking support.
Why Builders Choose UWG Vinyl Windows
Factory-Direct Vinyl Windows Bulk Supply
UWG is a source window manufacturer for builders and a one-stop supply chain partner for North American construction. We've broken away from the traditional multi-layer distribution model — as a leading bulk window supplier, we cut out the middlemen and connect windows that meet North American project requirements directly to your procurement plan and jobsite, cutting your purchasing cost in half. Unlike suppliers who rely on third-party sourcing, UWG owns its own vinyl windows manufacturing facility, giving us direct control over production scheduling, quality standards, packaging, and delivery coordination. For bulk vinyl windows and wholesale orders, UWG supports factory-direct production, palletized packaging, and coordinated project delivery.
Project-Based Vinyl Window Solutions, From Blueprints to Delivery
UWG understands the distinct design codes and material standards across different building types, helping residential projects execute with precision. We provide complete new construction windows for residential & commercial projects solutions that comply with North American industry codes. Builders simply submit their architectural blueprints — our team handles every window's dimensional takeoff and performance matching, and once materials arrive onsite, UWG can even take on the installation as a project subcontractor or provide on-site installation guidance, delivering a closed-loop process from materials to completion.
Code-Compliant Vinyl Windows for All North American Climate Zones
For every climate zone across North American residential projects, our vinyl windows are engineered and certified against rigorous structural and performance standards, delivering energy efficiency, weather resistance, and long-term reliability. Every window passes AAMA/FGIA fenestration performance testing, with proven, stable results for air infiltration, water resistance, and structural strength that hold up under long-term wind and rain exposure. Testing under the NFRC 400 air infiltration standard quantifies key whole-window metrics — U-Factor (heat transfer), SHGC (solar heat gain coefficient), and air leakage — helping builders match precise code requirements across climate zones. Combined with ENERGY STAR-qualified glazing options, our windows deliver real energy savings for residential projects.
Retail-grade quality at factory-direct prices — save up to 50%.
Full control from raw material to finished product, quality assured at every step.
Order as little as one pallet, with fast shipping from our U.S. warehouse.
DDP shipping straight from the factory to your jobsite — no customs or logistics headaches.
Just submit your blueprints — full support from spec matching through
installation.
Fully certified for North American thermal and air-tightness performance standards: NFRC CPD Product Line No.: ANH-K-6.
New Construction Windows for Residential & Commercial Projects
UWG provides premium new construction vinyl windows service purpose-built for mid-size to large builders and residential developers. To meet the strict waterproofing and envelope-installation requirements of new-build projects, our window systems come standard with a dedicated nailing fin for secure wall anchoring, with an optional snap-on J-channel for clean exterior trim-out — compatible with the siding or stucco façades most common across North America. Every unit also features high-performance Low-E coating and an argon-filled IGU glazing system, ensuring U-Factor and SHGC values fully meet IECC code and local building-review requirements.
Builders simply provide the original architectural blueprints — our engineering team takes full ownership of precise blueprint takeoff and milestone-based delivery management. With a flexible supply chain that starts at just 1 pallet, we support staged on-site delivery from first shipment through final close-out, keeping your project timeline on track from start to finish.
Custom Vinyl Windows: Sizes, Colors & Glass Configurations
From non-standard sizes and specialty shapes to glazing systems and exterior finishes, UWG offers fully custom vinyl windows configurations built around your project's requirements. Choose from Low-E glass, argon-filled IGUs, tempered glass, ASA co-extrusion, and laminate color finishes — U-Factor, SHGC, and other performance targets can be matched to your project's local code requirements and actual configuration.
Need help confirming a spec against your blueprints? Our technical team can verify window type, size, frame depth, glass, exterior color, and installation accessories to help your project move faster from selection to final quote.
For large developers and multi-site builders, we move complex non-standard window fabrication upstream into our factory production line — precisely translating the architect's design intent while significantly cutting on-site installation labor costs and rework risk.
Vinyl Window Specifications & Standard Sizes
Every UWG window is manufactured to rigorous industrial-grade standards. We offer a highly flexible range of configurations — from core multi-chamber frame construction to advanced energy-efficient glazing upgrades — built to support every level of B2B procurement need.
| Standard Vinyl Window Sizes | ||||
|---|---|---|---|---|
| Vinyl Windows Type | Rough Opening (R.O.) Size | Actual Unit Size | ||
| Width (in.) | Height (in.) | Width (in.) | Height (in.) | |
|
Applies to: Single Sliding Windows Single Hung Windows Double Hung Windows Fixed Windows Crank Out Casement Windows |
18" | 24" | 17-1/2" | 23-1/2" |
| 18" | 30" | 17-1/2" | 29-1/2" | |
| 18" | 36" | 17-1/2" | 35-1/2" | |
| 18" | 48" | 17-1/2" | 47-1/2" | |
| 24" | 36" | 23-1/2" | 35-1/2" | |
| 24" | 42" | 23-1/2" | 41-1/2" | |
| 24" | 48" | 23-1/2" | 47-1/2" | |
| 24" | 60" | 23-1/2" | 59-1/2" | |
| 30" | 36" | 29-1/2" | 35-1/2" | |
| 30" | 42" | 29-1/2" | 41-1/2" | |
| 30" | 48" | 29-1/2" | 47-1/2" | |
| 30" | 54" | 29-1/2" | 53-1/2" | |
| 30" | 60" | 29-1/2" | 59-1/2" | |
| 32" | 38" | 31-1/2" | 37-1/2" | |
| 32" | 48" | 31-1/2" | 47-1/2" | |
| 36" | 36" | 35-1/2" | 35-1/2" | |
| 36" | 42" | 35-1/2" | 41-1/2" | |
| 36" | 48" | 35-1/2" | 47-1/2" | |
| 36" | 54" | 35-1/2" | 53-1/2" | |
| 36" | 60" | 35-1/2" | 59-1/2" | |
| 36" | 72" | 35-1/2" | 71-1/2" | |
| 48" | 48" | 47-1/2" | 47-1/2" | |
| Single Sliding Patio Door | 60" | 80" | 59-1/2" | 79-1/2" |
| 72" | 90" | 71-1/2" | 89-1/2" | |
| 72" | 96" | 71-1/2" | 95-1/2" | |
| Configuration | Standard Specifications | Value for Builders | |
|---|---|---|---|
| Frame Depth | 3-1/4" | Covers the vinyl windows / uPVC windows configurations most common in North American projects, with flexible options to match wall type and installation conditions. | |
| 2-5/8" | |||
| Construction | Fusion Welded Frame & Sashes | Fusion-welded corners for a stronger joint; multi-chamber vinyl window frames balance structural stability with thermal performance, reducing the risk of warping during | |
| Strong Multi-Chamber Construction | Multi-chamber construction balances thermal performance with frame stability. | ||
| Frame Profile | Continuous Designer Beveled Frame | Adds visual depth to the façade — a great fit for custom windows projects where | |
| Base Glazing | Single Glazing | 1/4" | Covers the most common glazed window configurations, offering cost-effective daylighting and sealing performance; tempered glass is available for high wind-load or impact-safety areas. |
| IGU Total Depth | 3/4" | ||
| 7/8" | |||
| 1" | |||
| Configurations | 3/4" IGU: 1/8" + 1/2" Air + 1/8" | ||
| 3/4" IGU: 3/16" + 3/8" Air + 3/16" | |||
| 7/8" IGU: 1/8" + 5/8" Air + 1/8" | |||
| 1" IGU: 1/8" + 3/4" Air + 1/8" | |||
| Glass Types | Clear Annealed Glass | ||
| Tempered Glass | |||
| Color & Finish | ASA Co-extrusion | Available in standard colors and custom laminate finishes to support custom vinyl windows exterior requirements. | |
| Custom Colors | Extruded Black (Solid Black) | ||
| Black Exterior / White | |||
| Tan | |||
| Other Laminate Colors | |||
| Upgrade Option | Detailed Description & Technical Specification | Application Scenario |
|---|---|---|
| Nailing Fin Attachment | Integrated mounting flange (nailing fin); standard on new construction windows, and can be trimmed on-site if needed | Essential for new construction. Provides secure wall anchoring and excellent waterproofing performance for new construction windows. |
| Performa TC™ Low-E | Soft-coat Low-E coating on the exterior glass | Improves energy performance. Further lowers U-Factor and SHGC to help match the IECC performance targets required in your project’s location. |
| Argon-filled IGU upgrade | ||
| Grids | Between-the-glass grids | Adds decorative value to the façade. Gives the building a classic American look — a great fit for custom windows projects. |
| Exterior applied grids (SDL) | ||
| Balances Upgrade | Spiral balances | Makes lifting large sashes easier. Designed for oversized or heavy double hung / single hung windows, keeping operation smooth over years of use. |
| Block & tackle balances (heavy-duty balance system) | ||
| J-Channel System | Snap-on J-channel | Makes exterior trim-out faster. Compatible with siding or stucco exteriors for a clean finish, saving significant on-site labor. |
| Applied J-channel | ||
| Architectural Shapes | Custom-molded specialty shapes (such as round-top, triangle, and other irregular geometric windows) | Supports distinctive façade designs. Precisely delivers on architects’ special openings and non-standard blueprint requirements for specialty windows. |
Vinyl Windows Projects Supported by UWG
Multi-Family Townhome Vinyl Windows Supply
Project Location: Long Beach, CA 90802
Window Configuration: Single Hung Vinyl Windows / Double Hung Vinyl Windows / Vinyl Picture Window
Project Size: 68 units / 112,000 sq ft
Lead Time: 14 weeks from order to jobsite delivery
This multi-family townhome project required consistent sizing, uniform coloring, and dependable bulk delivery. UWG confirmed vinyl window specifications against the project's window schedule and supplied at scale, helping the project maintain a consistent window ratio and exterior appearance across repeating façades.
Multi-Family Vinyl Window Residential
Project Location: Joliet, IL 60431
Window Configuration: Single Hung Vinyl Windows / Vinyl Picture Window / Vinyl Casement Windows
Project Size: 180 units / 245,000 sq ft
Lead Time: 16 weeks from order to jobsite delivery
UWG worked from this multi-family residential project's actual window schedule to confirm vinyl window sizing, style, and configuration, laying a clear foundation for bulk production and delivery.
Custom Vinyl Windows for a Modern Single-Family Home
Project Location: Atlanta, GA 30349
Window Configuration: Single Hung Vinyl Windows / Double Hung Vinyl Windows / Vinyl Picture Window / Vinyl Casement Windows
Project Size: 1 unit / 4,200 sq ft
Lead Time: 10 weeks from order to jobsite delivery
This single-family home's window system needed to balance daylighting, ventilation, and the overall architectural lines of the building. For modern residential projects like this one, windows have a direct impact on façade proportion and finish quality. By confirming window type, size, color, glass, and swing direction before production, UWG helped the builder cut down on on-site adjustments and match every opening more precisely to the blueprints and exterior design.
Vinyl Windows Sourcing Guide for Builder
Vinyl Windows FAQ for Builders
Everything you need to know about sourcing doors, cabinets, flooring, and more. Our articles and guides help you make informed decisions and stay ahead in your projects.
Factory pricing and lightning-fast shipping from our U.S. warehouses — every product meets North American building industry standards, so your project finishes on time and on budget.