Explore Gentek 1900 Series casement windows, including crank operation, multipoint locking, compression seals, standard and egress hardware, screens, exterior clearance, glass packages, performance ratings, installation planning, homeowner questions, and sales tips.

Article 58 of 100 | Casement Window Product Guide

Gentek 1900 Series Casement Windows: Features, Egress, and Sales Guidance

Casement windows are often recommended for their broad opening, compression-style seal, unobstructed glass area, and single-handle operation. Those benefits can be valuable, but a casement window also projects into exterior space and depends on hinges, operating arms, locks, and careful frame alignment.

The Gentek 1900 Series casement window is designed for new construction and qualifying full-frame applications. Selecting it correctly requires more than choosing a size and glass package. Contractors must confirm hinge direction, exterior clearance, hardware, egress needs, screens, frame details, performance ratings, and installation requirements.

How a Casement Window Operates

A casement window has a sash hinged along one vertical side. Operating hardware moves the sash outward from the frame, while a separate locking system secures the sash in its closed position.

Gentek describes its 1900 Series casement with a low-profile, single-handle, multipoint positive locking system. The single lock handle controls multiple locking locations within the window system.

The collection is available with or without integral J-channel for qualifying configurations. Contractors can review the complete series through Suburban Wholesale & Supply’s Gentek 1900 Series new construction window page .

The operating sequence matters

Unlock the sash before using the crank or operating handle. Attempting to force the sash open while the multipoint lock remains engaged can damage the operator, lock, keeper, sash, or frame.

Casement Versus Double-Hung and Sliding Windows

Selection factor	Casement	Hung or sliding window
Sash movement	Projects toward the exterior	Moves within the frame plane
Locking	Single-handle multipoint system in the Gentek design	Typically uses sash locks at meeting rails or jambs
Weather seal	Sash closes against compression-style seals	Sliding contact and interlock-style weatherstripping
Screen location	Normally on the interior	Normally toward the exterior
Exterior clearance	Requires clear space for sash projection	No projecting sash
Opening shape	Can create a broad, unobstructed opening for qualifying sizes	Clear opening is reduced by the other sash or fixed section

Casements are not automatically more energy efficient, secure, or suitable for egress than other windows. Compare the documented ratings and functional requirements for the exact products.

Fusion-Welded Sash and Mainframe

Gentek describes its new construction casement and awning products with fusion-welded vinyl sash and mainframe construction. Fusion welding joins the vinyl corners into integrated assemblies rather than relying only on mechanical corner fasteners.

Welded construction can contribute to structural integrity, but the frame can still be damaged or distorted during shipping, storage, handling, fastening, shimming, or perimeter insulation.

Inspect welded corners, hinge locations, operator attachment points, nailing fins, glass, weather seals, and frame alignment before installation. Do not install a cracked, distorted, or unverified unit simply to preserve the schedule.

Multipoint Locking

A multipoint system engages the sash at more than one location when the lock handle is operated. Multiple engagement points can help draw the sash toward the frame and distribute locking contact.

For the system to work correctly, the frame, sash, locking bars, keepers, hinges, and weather seals must align. A window that requires excessive handle force may be out of adjustment or installed with frame distortion.

Final lock inspection

Close the sash using the operator without forcing it.
Confirm that the sash reaches the intended closed position.
Operate the lock handle through its complete travel.
Verify engagement at every locking point.
Check compression-seal contact around the sash perimeter.
Repeat the opening and locking cycle several times.

Security claim to avoid

Multipoint locking can improve sash engagement, but it does not make the window burglar-proof. Security also depends on glass, frame, anchoring, wall construction, hardware use, and the nature of an attempted entry.

Compression-Type Inner Bulb Seal

Gentek identifies a compression-type inner bulb seal as part of the casement and awning design. When the sash closes and locks, the seal is compressed between the sash and frame.

Compression can contribute to air and water performance, but only when the sash closes uniformly. A bowed frame, misaligned hinge, damaged seal, debris, paint, or incorrectly positioned keeper can create uneven contact.

Do not apply unapproved lubricant, paint, solvent, or adhesive to the seal. Follow current Gentek care and service instructions.

Troubleshooting principle

If one corner does not seal, investigate frame and sash alignment before replacing the weather seal or moving hardware.

Confirm the Hinge and Opening Direction

Casement handing can be described differently depending on whether the window is viewed from the interior or exterior. Avoid ordering from “left-hand” or “right-hand” terminology alone.

Use a drawing that labels the interior, exterior, hinge side, lock side, direction of sash projection, and desired airflow. Mark every casement separately on the window schedule.

Opening direction affects:

Which side receives the strongest ventilation under common wind conditions
Access to the lock and operating handle
Exterior clearance
Relationship with adjacent casement sashes
Cleaning access
Interior screen removal
Architectural symmetry

A casement sash can sometimes help direct passing air into a room, but that effect changes with wind direction, sash angle, landscaping, and adjacent construction. Do not promise a specific airflow improvement.

Exterior Clearance Is Mandatory

Because the sash projects outward, the space outside the opening must remain clear throughout its intended travel.

Check for interference with:

Public and private walkways
Decks, patios, and stairs
Porch railings and columns
Roof slopes, gutters, and downspouts
Air-conditioning equipment and utility meters
Shrubs, trees, and landscaping
Exterior shutters or decorative trim
Adjacent casement or awning windows

A projecting sash beside a walkway can create an impact hazard. A sash above a roof can be obstructed by shingles, flashing, snow, or future roof replacement. Evaluate the completed exterior—not just the framed wall.

Plan for future conditions

Landscaping grows, decks receive furniture, and mechanical equipment may be replaced. Leave practical operating space rather than designing to the smallest possible clearance.

Standard Versus Egress Hardware

Gentek shows a standard casement opening design and an optional egress-hardware arrangement. The manufacturer states that the egress option provides a greater window opening area for qualifying building-safety applications.

The word “egress” in the hardware name is not a universal statement of code compliance. The exact window size, sash, hardware, opening angle, frame, operating components, and installation height determine the usable opening.

Verify all four egress factors

Minimum net clear opening width
Minimum net clear opening height
Minimum net clear opening area
Maximum sill height above the finished floor

Window-well dimensions, ladders, guards, opening-control devices, and local amendments may also apply. Use current clear-opening data and the locally adopted code.

Sales claim to avoid

Do not say, “Casements always meet egress at a smaller size.” Some configurations can provide efficient clear openings, but only the exact current data can establish compliance.

Interior Screens

Because the casement sash projects outward, its insect screen is normally positioned on the interior. This keeps the screen stationary while the sash opens beyond it.

An interior screen can be protected from some exterior weather, but it remains vulnerable to household impacts, pets, furniture, cleaning tools, and improper removal.

Screens are designed for insect control. They are not security, fall-prevention, child, or pet barriers.

Screen questions to confirm

Mesh material and color
Screen-frame finish
Removal and retention method
Compatibility with interior blinds or shades
Replacement-screen availability
Clearance from sinks, countertops, and furniture

Cleaning the Exterior Glass

Gentek states that the standard casement opening design provides convenient cleaning of the sash from inside the home. Cleaning access still depends on the window size, opening angle, arm length, surrounding wall, and the user’s physical ability.

Gentek’s care guidance recommends unlocking the window before using the crank and removing the interior screen before cleaning. The sash is then opened to its intended position so the exterior glass can be reached through the space between the sash and frame.

Do not lean dangerously through the opening, place excessive weight on the operator, or force the sash beyond its intended travel. Use a safe alternative if the glass cannot be reached comfortably.

Gentek warns against abrasive cleaners, solvents, paint removers, sharp objects, and high-pressure exterior washing. Follow the current care instructions for the exact product.

Single and Multiple-Lite Configurations

Gentek states that qualifying casement and awning windows can be produced in multiple-lite configurations within a single mainframe. This can create a coordinated appearance while reducing some field-mulling requirements.

Multiple-lite configurations may combine fixed and operating sections, paired casements, or other approved arrangements. The exact configuration determines sightlines, screens, locks, clear openings, structure, energy ratings, and cost.

Before ordering a combination

Mark each operating and fixed section.
Identify the hinge direction of each casement sash.
Check that adjacent sashes will not collide.
Verify overall and individual size limitations.
Confirm structural and thermal ratings for the complete configuration.
Coordinate grid patterns across all sections.
Verify required screens and hardware.
Confirm which opening must satisfy egress.

Glass Packages and Energy Performance

Gentek identifies Low-E insulating glass, the Super Spacer structural foam spacer system, and optional argon gas as energy-performance components for qualifying 1900 Series windows.

A casement sash that closes against a compression seal can provide strong documented performance in qualifying configurations. It should not be described as automatically more efficient than every hung, sliding, or fixed window.

Compare current NFRC values for the exact style, size, glass package, grids, and configuration:

U-factor for overall heat transfer
Solar Heat Gain Coefficient for admitted solar heat
Visible Transmittance for visible light
Air leakage when included in the applicable documentation

Energy savings also depend on installation, orientation, shading, glass area, the complete building envelope, HVAC equipment, weather, and occupant behavior. Do not guarantee a percentage reduction in utility costs.

Structural Performance and Wind Exposure

An open casement sash can be exposed directly to wind. Homeowners should not leave the window open during severe weather or force it against wind pressure.

When closed and locked, performance depends on the tested frame, sash, glass, multipoint lock, hinges, hardware, seal, size, anchoring, and installation.

Gentek identifies high-performance models for qualifying stringent-code applications, including some coastal markets. This does not mean every 1900 Series casement is impact-rated, hurricane-rated, or suitable for every wind zone.

Obtain current performance data for the exact window and compare it with project-specific design pressures.

AAMA Gold Label Certification

The Fenestration and Glazing Industry Alliance administers the AAMA Gold Label Certification Program for qualifying windows, doors, and skylights. The program includes product testing, manufacturing-site inspections, and continuing certification requirements.

For a casement window, verify that the label and certification record correspond with the exact product designation, size, glass, hardware, performance class, performance grade, and referenced standard.

Standard and egress hardware can create different opening and operating characteristics. Do not assume a certification record for one configuration applies to the other without documentation.

The Gold Label identifies a certified manufactured configuration. It does not certify the field installation or surrounding wall.

InstallationMasters Principles for Casement Windows

FGIA’s InstallationMasters program provides training and certification for installers of new construction and replacement windows and exterior glass doors. Training covers site inspection through installation, final cleaning, and maintenance.

Casement operation depends heavily on frame alignment. A small amount of bow or twist can affect hinge geometry, operator travel, multipoint locking, and compression-seal contact.

Verify size, hinge direction, frame option, glass, and hardware.
Confirm adequate exterior sash clearance.
Check the rough sill for level and continuous support.
Verify the opening is reasonably square and the jambs are plumb.
Install the required sill pan and flashing.
Integrate the nailing fin with the water-resistive barrier.
Fasten and shim without bowing or twisting the frame.
Insulate the perimeter without applying excessive pressure.
Operate, close, lock, and reopen the sash before final trim.
Demonstrate unlocking, cranking, closing, locking, screen removal, and cleaning.

InstallationMasters principles support professional practice, but current Gentek instructions, project specifications, engineering, and applicable codes remain controlling.

Contractor Ordering Checklist

☐ Confirm Gentek 1900 Series casement style.
☐ Mark hinge side and sash projection from a stated viewing direction.
☐ Verify exterior clearance throughout the sash’s travel.
☐ Confirm standard or egress hardware.
☐ Verify unit size, rough opening, wall depth, and frame option.
☐ Confirm integral J-channel or non-J-channel configuration.
☐ Identify single- or multiple-lite construction.
☐ Verify clear-opening data when egress is required.
☐ Confirm glass package, safety glazing, NFRC ratings, colors, and grids.
☐ Verify AAMA certification and required performance grade.
☐ Confirm screen mesh, frame, and removal method.
☐ Review current installation, operation, care, and warranty documents.

Compare Gentek Casement Windows with Suburban Wholesale

Suburban Wholesale & Supply helps contractors, builders, remodelers, property professionals, and homeowners compare Gentek windows for projects throughout Davenport, Bettendorf, LeClaire, Eldridge, Moline, Rock Island, and the Quad Cities.

Bring plans, elevations, opening dimensions, desired hinge direction, exterior-clearance photographs, egress requirements, glass selections, colors, grids, and required performance criteria. The team can help identify unresolved details before the order is finalized.

Explore Gentek 1900 Series Windows Request a Product Demonstration Request a Window Quote

Sources and Technical References

Gentek Building Products — 1900 Series New Construction Windows
Suburban Wholesale & Supply — Gentek New Construction 1900 Series
Gentek Building Products — 1900 Series Window Size Guide
Gentek Building Products — Care and Operation Guide
Fenestration and Glazing Industry Alliance — AAMA Gold Label Certification Program
Fenestration and Glazing Industry Alliance — InstallationMasters Certification
Current Gentek product specifications, size charts, clear-opening data, thermal and structural performance records, installation instructions, NFRC labels, certifications, warranties, and applicable building codes.

Technical note: The linked Gentek size guide is dated February 2018 and may not reflect current model numbers, sizes, hardware, clear-opening data, glass packages, ratings, or availability. Verify the exact casement configuration with current Gentek documentation. This article does not replace manufacturer instructions, code review, structural engineering, or project-specific egress calculations.

Gentek 1900 Series Casement Windows: Contractor Selection Guide