They are multi-panel window systems in which hinged panels slide and fold toward one or both sides. “Folding windows,” “bifold windows” and “bi-fold windows” are commonly used for the same opening concept.

There is no responsible single maximum for every configuration. Feasibility depends on total opening size, panel dimensions, glass weight, reinforcement, hardware, wind pressure and opening direction. ROPO reviews these inputs before confirming a design.

Two-panel and multi-panel layouts can be evaluated. The final count and stacking arrangement should balance clear opening, sash width, weight, structural performance and daily operation.

Inward and outward opening concepts may be available depending on the system, sill, site clearance and project requirements. Confirm the operating direction on the approved drawing.

Yes, subject to the profile, hardware and sash-weight limits. Low-E, tempered and laminated options can also be evaluated for energy, safety, acoustic or high-wind priorities.

Screen solutions may be possible where the folding direction, sill, opening dimensions and available installation space allow. Include the screen requirement in the initial inquiry.

Water resistance depends on the complete system: seals, panel compression, drainage, frame fabrication, approved dimensions and correct installation. Project-specific test data should be reviewed where required.

Provide width, height, quantity, panel layout, opening direction, glass, color, performance requirements, project location, delivery destination and drawings or a window schedule.

Both depend on size mix, profile color, glass, hardware, total quantity, packaging and material availability. ROPO provides an order-specific production plan after reviewing the requirement.

Available technical drawings, section details and installation guidance can be discussed during the project review. Installation must follow approved details and local building requirements.