Made-to-measure projection windows Flexible window configurations for builders, developers, wholesalers, architects and window companies—from concept review and shop drawings to production, inspection and export delivery. Send your drawings, window schedule or rough opening sizes for a preliminary review. Two projection window systems Both project beyond the exterior wall to increase light, views and usable space. Their geometry, panel count, projection and architectural character are different. An angular projection window, commonly built with three units and a wider center panel. Suitable for projects requiring a deeper projection and a defined architectural form. A multi-panel projection window that creates a softer curved appearance. Four, five or six window units can be evaluated according to the opening and project design. Built around your project Every bay or bow assembly is reviewed as a complete system. Size, geometry, glass, opening types, reinforcement and installation details must work together. Overall frame size, rough opening, projection depth, bay angle, bow panel count and center-to-flanker ratio. Fixed center panels, casement sides, tilt-and-turn options and mixed fixed/operable configurations. Double or triple glazing, Low-E, laminated, toughened, acoustic and argon-filled insulated glass options. Profile selection, reinforcement, available finishes, hardware, corner connectors, headboards and seat boards. B2B buyer support Choose your business type to see the documents, decisions and support that matter most during evaluation and procurement. Expand your range with repeat-order configurations, samples, OEM support and export-ready packaging. Coordinate opening dimensions, window schedules, shop drawings and delivery requirements before production begins. Control project risk through sample approval, batch inspection, production scheduling and documented packing. Review geometry, sections, glass specifications and configuration-specific performance information.
Custom uPVC Bay & Bow Windows for Building Projects
ROPO Window EngineeringCustom Series
3–6 panel optionsProject-specific configuration
90° · 135° · any angleBay angles subject to review
Custom SizesMade to project dimensions
Configuration SupportBay, bow, glass and openings
Technical DocumentsDrawings and project details
Export DeliveryInspection and protective packing
uPVC Bay & Bow Windows: Two Projecting Forms
uPVC Bay Windows
uPVC Bow Windows
Made-to-Measure Configuration Options
Size & Projection
Opening Types
Glass Options
Frames & Accessories
One Product Family, Different Buying Requirements
For Wholesalers & Distributors
For Builders & Contractors
For Developers & Project Buyers
For Architects & Engineers
Specification framework
Use this table as a starting point. Final values and available configurations must be confirmed against the actual window size, glass, hardware and project requirements.
Performance values vary according to window size, configuration, glazing and project requirements. Contact ROPO for configuration-specific technical data.
Performance by configuration
Select the complete window configuration around climate, acoustics, wind exposure and installation conditions—not from a single component value.
Review whole-window U-value, Low-E coatings, insulated glass, spacers and frame configuration together.
Glass thickness, laminated layers, air spaces, seals and operable sashes influence sound performance.
Wind load, deflection, air leakage and water penetration must match the tested size and configuration.
Discuss exposure, hardware, glass and maintenance requirements for tropical, coastal or high-wind sites.
From concept to delivery
The following workflow helps reduce specification gaps before custom production.
For faster technical decisions
Request the information your team needs to review product fit, prepare a window schedule and obtain a reliable quotation.
Overview of product families and available customization.
Typical sections and configuration-specific drawing requests.
Information needed for preliminary review and quotation.
Compare thermal, safety and acoustic glazing choices.
Start with project information
Share the available information now. Our team can review your project scope and identify any dimensions, configurations or technical details still required.
Use ROPO's inquiry channel to attach drawings, window schedules and specifications for a project-specific review.
Send Project Information Include your company, country, quantity, dimensions, configuration and target delivery when available.Frequently asked questions
A bay window commonly uses three window units and clear angular projections, while a bow window normally uses four or more units to create a softer curved appearance.
ROPO can review made-to-measure requirements based on the opening, angle, projection depth, panel count, glass and opening configuration.
Please provide the project country, customer type, quantity, rough opening or frame dimensions, bay angle or bow panel count, projection depth, glass specification, opening configuration and any available drawings.
Typical bay configurations include 90° and 135° box bay windows. Other angles and project-specific geometry can be reviewed against the opening and structural requirements.
Four-, five- and six-panel bow windows are common starting points. The appropriate number depends on total width, desired projection, glass dimensions and opening functions.
Yes. A common bay configuration uses a fixed center window with operable side windows. Bow windows can also combine fixed and operable units after technical review.
Options can include double or triple glazing, Low-E glass, toughened glass, laminated glass, acoustic glass and argon-filled insulated glass.
Configuration and project drawings can be prepared after the required dimensions and product options are confirmed.
Lead time depends on order quantity, window configuration, glass specification and project documentation. ROPO confirms the schedule after drawings and order details are approved.
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