Learn where the Gentek 1700 Series picture or fixed-lite window works best, including natural-light benefits, energy ratings, safety glazing, size and structural limits, window combinations, cleaning access, installation planning, and important egress restrictions.

Article 54 of 100 | Fixed Window Product Guide

Gentek 1700 Series Picture Window: Benefits, Limitations, and Selection Guidance

A picture window can provide expansive views, natural light, and clean architectural sightlines without the hardware and joints required for an operating sash. Those advantages make fixed windows attractive, but they do not make them appropriate for every opening.

A fixed window provides no ventilation and cannot serve as an emergency escape opening. Large glass areas can also introduce solar-heat, safety-glazing, structural, handling, cleaning, and privacy considerations. The Gentek 1700 Series picture window should therefore be selected as part of the complete room and wall design—not simply because a homeowner wants “more glass.”

What Is the Gentek Model 1704 Picture Window?

Gentek’s February 2018 1700 Series size guide identifies Model 1704 as the picture or fixed-lite window in the new construction collection. A fixed-lite window has permanently glazed glass within a nonoperating frame.

With no movable sash, the window is intended to provide daylight and views rather than ventilation. It can be installed independently or incorporated into an approved window combination.

Contractors can review the overall product collection through Suburban Wholesale & Supply’s Gentek 1700 Series new construction window page .

The most important limitation

A picture window does not open. It cannot provide natural ventilation or an emergency escape and rescue opening, regardless of how large the frame or glass area may be.

Why Homeowners Choose Picture Windows

Expanded views

Without operating locks, lifts, balances, or meeting rails, a fixed window can create a cleaner view through the opening.

Natural light

A broad glazed area can bring daylight deeper into living rooms, stairwells, dining spaces, entries, and other interior areas.

Simple operation

Because the unit does not open, there are no sash-operating steps to learn and no operating hardware to adjust during normal use.

Clean architectural lines

Fixed glass can support traditional or contemporary designs depending on its proportions, grids, color, trim, and surrounding window arrangement.

Potential air-control advantage

A fixed unit eliminates operable-sash joints. Actual air-leakage performance must still be confirmed using the rating for the exact product.

Combination flexibility

A picture window can be paired with qualifying operating windows to combine a central view with ventilation at the sides or below.

Sales tip

Ask what the homeowner wants to see through the opening. A large fixed window that frames a neighboring wall, utility equipment, or intense afternoon sun may not create the value the customer expects.

Fixed Window Versus Operating Window

Selection factor	Picture or fixed-lite window	Operating window
Ventilation	Does not provide ventilation	Can provide ventilation when open
Emergency escape	Cannot provide an escape opening	May qualify if the exact clear opening and installation meet code
View	No operating sash or meeting rail	Sightlines include sash and hardware
Cleaning	Exterior glass must be reached from outside or by another safe method	Some styles offer tilt, removable, or projecting cleaning access
Screens	No insect screen normally needed	Screen generally used when open
Hardware maintenance	No operating lock, balance, or roller system	Operating components require inspection

A fixed window should not be sold as universally “better” or “more efficient.” It is a different functional choice. Compare documented performance values and match the style to the room’s ventilation, safety, cleaning, and emergency-escape needs.

Frame and Glazing Construction

Gentek’s historical 1700 Series technical guide describes rigid extruded vinyl profiles with mitered, fusion-welded frame construction. The frame includes an integral pre-punched nailing fin, a sloped sill, drainage openings, and interior and exterior accessory grooves.

The same guide describes a 3/4-inch insulating-glass unit with two panes of glass sealed around a warm-edge spacer system. Current glass thickness, construction, spacer, coatings, gas fills, and available sizes must be confirmed for the exact ordered unit.

Why a fixed window still needs drainage

“Fixed” describes sash operation, not water exposure. Wind-driven rain and incidental water can still reach exterior frame cavities. The product’s intended drainage openings and the wall’s flashing system must remain functional.

Do not fill a manufactured opening or drainage route with sealant merely because the window does not open. Confirm the component’s purpose using current manufacturer documentation.

Glass Selection Is the Main Performance Decision

Because a picture window is predominantly glass, the selected insulating-glass package has a major effect on heat transfer, solar gain, visible light, interior comfort, exterior appearance, and project cost.

Gentek’s historical 1700 Series guide lists clear, Low-E, Low-E with argon, tinted, obscure, laminated, and tempered insulating-glass options. Current availability and performance must be verified.

Selection	Potential benefit	Critical qualification
Low-E glass	Helps manage radiant heat transfer and solar performance	Coatings differ; confirm U-factor, SHGC, Visible Transmittance, and appearance
Argon gas	Can improve insulating-glass thermal performance	Confirm current package and elevation or capillary-tube requirements
Tinted glass	Can reduce glare or alter solar and visual characteristics	Review transmitted color, light level, exterior reflection, and thermal stress
Obscure glass	Provides varying degrees of visual privacy	Privacy changes with lighting and distance; verify safety-glazing needs
Tempered glass	Can satisfy qualifying safety-glazing applications	Confirm code, location, size, and permanent safety marking
Laminated glass	May support specific safety, sound, security, or retention goals	Do not claim impact, forced-entry, or sound performance without applicable testing

Avoid the biggest glass-sales mistake

Do not select glass using climate zone alone. Window orientation, roof overhangs, trees, neighboring buildings, interior finishes, room use, and the total glass area can materially change the homeowner’s comfort.

Natural Light Without Uncontrolled Glare

More glass generally permits more daylight, but useful daylight is not the same as maximum glass area. An oversized unshaded picture window can introduce glare, screen reflections, faded furnishings, or uncomfortable solar heat during portions of the day.

Review the window’s compass orientation and seasonal sun exposure. East-facing glass can receive intense morning sun, while west-facing glass can create late-afternoon glare and solar gain. South- and north-facing windows behave differently depending on latitude, overhangs, and surrounding structures.

Questions to ask the homeowner

Will a television, computer, or work surface face the window?
Are rugs, artwork, wood floors, or furniture sensitive to sunlight?
Does the room already become hot during part of the day?
Will shades or blinds be installed?
Does an overhang or porch shade the glass?
Is nighttime privacy important?
What will be visible through the window from inside and outside?

Safety Glazing Must Be Checked

Large fixed windows are often installed close to floors, doors, tubs, showers, stairways, landings, and walking surfaces. Those locations may trigger safety-glazing requirements under the locally adopted building code.

Whether safety glazing is required can depend on the glass size, exposed edge, height above the floor, distance from a door, location near stairs, and surrounding guards or barriers. The requirement cannot be determined from the words “picture window” alone.

Verify the current code and specify the appropriate approved glazing. Required permanent safety markings should remain visible and should not be covered or removed.

Contractor sales tip

Identify safety-glazing locations before preparing the base quote. Treating tempered glass as a surprise change order after the plans are reviewed creates avoidable conflict.

A Picture Window Cannot Provide Egress

Emergency escape and rescue openings must open and provide the required clear width, height, area, and sill relationship under the applicable code. A fixed-lite window provides no opening and therefore cannot perform that function.

This limitation is especially important in bedrooms, basements, and sleeping rooms. A large picture window may provide abundant light and still fail the emergency-escape requirement completely.

A fixed window may sometimes be included in a room that has a separate qualifying emergency escape opening. The project team must confirm the locally adopted code and the exact room arrangement.

Planning Fixed and Operable Window Combinations

One of the strongest applications for a picture window is an approved combination with operating windows. Examples can include a fixed center unit with single-hung or sliding windows positioned beside it.

The fixed section creates the primary view while the operating units provide ventilation. This strategy can be effective, but the complete assembly requires more than placing separate windows next to each other.

Combination details to verify

Approved factory or field mulling method
Required metal reinforcement
Maximum individual and overall assembly dimensions
Performance rating of the complete mulled assembly
Head, sill, and jamb structural support
Drip cap and flashing at mull intersections
Glass and frame sightline alignment
Grid alignment across fixed and operating units
Shipping, handling, lifting, and installation requirements

Suburban Wholesale describes an optional metal-reinforced mulling system within the 1700 Series program. The system includes a metal channel intended to add rigidity and a drip cap at the head to help direct water away from the mullion.

Do not transfer component ratings

Two individually rated windows do not automatically create a combined unit with the same rating. Obtain documentation for the complete mull, size, configuration, reinforcement, glass, and anchoring method.

Size and Structural Performance

Large picture windows are exposed to wind pressure across a broad glass and frame area. The required glass thickness, frame construction, reinforcement, size limitations, anchoring, and performance rating can change as the unit becomes larger.

Do not assume that the absence of an operating sash permits an unlimited size. Maximum and minimum manufacturing dimensions are not the same as project-specific structural approval.

Verify the current Gentek size guide and certification information for the exact window. Building height, opening location, exposure, design pressure, tributary area, wind zone, and local code may affect the required performance.

Handling also changes with size

A large fixed glass unit can be heavy and difficult to control. Plan the delivery route, storage, lifting equipment, number of handlers, scaffolding, opening access, and temporary protection before the window reaches the jobsite.

Do not lift the window by its nailing fin, grids, packaging straps, or unsupported frame sections unless the manufacturer expressly permits that method.

Cleaning and Exterior Access

The interior surface of a picture window is generally straightforward to clean. The exterior surface can be difficult to reach when the window is installed above grade, over a stairwell, behind landscaping, or above a sloped roof.

Because the glass does not tilt or open inward, cleaning access should be considered before the window location and size are finalized.

Gentek’s care guidance recommends nonabrasive cleaning methods and warns against solvents, paint removers, sharp objects, and high-pressure exterior washing. Follow the current care instructions for the exact product.

A pressure washer can force water into joints and damage screens, sealants, finishes, or adjacent construction. Safe access and manufacturer-approved cleaning methods are more important than speed.

Grid Patterns and Architectural Style

Gentek’s historical 1700 Series guide lists grids between the glass in 5/8-inch flat, 3/4-inch contoured, and 1-inch contoured profiles. Historical patterns include Colonial, Single Prairie, Single Perimeter, and Craftsman.

Grids can help a large picture window coordinate with traditional architecture, but too many divisions can undermine the open view that motivated the fixed-window selection.

Compare a no-grid option with the proposed grid pattern on an elevation. If the picture window is combined with operating units, confirm that grid bars align intentionally across the full assembly.

Design principle

Do not add grids merely because nearby windows have them. First determine whether the window should visually disappear into the view or serve as an architectural feature.

NFRC Ratings and Honest Energy Claims

Gentek’s historical 1700 Series literature states that the product line is rated and labeled under NFRC requirements. The applicable NFRC label should be obtained for the exact picture-window size, glass package, grids, and configuration.

A fixed window may have a different rating from an operating window in the same series. Never copy a U-factor, Solar Heat Gain Coefficient, Visible Transmittance, or air-leakage value from another style.

Better glass can help reduce heat transfer, but it does not make an extremely large, unshaded window thermally invisible. Total glass area still affects the room and building envelope.

Honest sales language

“This glass package improves the documented performance of the window. Actual comfort and energy use will also depend on the opening size, orientation, shading, installation, HVAC system, and the rest of the home.”

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 ongoing certification requirements.

When a project requires certified performance, compare the label with the exact Model 1704 size, glass, performance class, performance grade, tested dimensions, and referenced standard.

A label from a smaller fixed window, an operating window, or an individual component should not be used to represent a large mulled assembly unless the certification documentation expressly applies.

The Gold Label applies to the manufactured product configuration. It does not certify the field installation, surrounding wall, flashing, or jobsite modifications.

InstallationMasters Principles for Fixed Windows

FGIA’s InstallationMasters program provides professional training and certification for installers of new construction and replacement windows and exterior glass doors. Its curriculum covers the process from initial site inspection through final cleaning and maintenance.

Fixed windows eliminate sash adjustment, but they do not simplify every installation issue. Large units can place greater demands on opening preparation, handling, support, fastening, and water-management integration.

Confirm exact unit and rough-opening dimensions.
Verify that the sill is level and continuously supported.
Check the opening for square and the jambs for plumb.
Plan safe handling and lifting for the actual unit weight and location.
Install the required sill pan or flashing before setting the window.
Integrate the nailing fin with the water-resistive barrier.
Use approved fasteners without bowing or twisting the frame.
Apply perimeter insulation without creating frame pressure.
Keep drainage paths and weep openings unobstructed.
Inspect glass, frame, sealant, labels, and finishes before final trim.

InstallationMasters principles do not replace current Gentek installation instructions, project specifications, engineering, or applicable building codes.

Contractor Ordering Checklist

☐ Confirm current Model 1704 designation and availability.
☐ Verify exact unit size, rough opening, wall depth, and frame option.
☐ Confirm that the room does not rely on the window for required ventilation or egress.
☐ Evaluate orientation, shading, glare, privacy, and total glass area.
☐ Determine whether safety glazing is required.
☐ Confirm current Low-E, gas-fill, tint, obscure, tempered, or laminated options.
☐ Verify NFRC ratings for the exact configuration.
☐ Verify AAMA certification and required performance grade.
☐ Obtain approval for mull construction and reinforcement when combining units.
☐ Coordinate grids, colors, sightlines, interior returns, and exterior cladding.
☐ Plan safe delivery, handling, lifting, installation, and future cleaning access.

Compare Gentek Picture Windows with Suburban Wholesale

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

Bring plans, opening dimensions, wall sections, glass requirements, orientation, safety glazing locations, performance criteria, grid details, and proposed window combinations. The team can help organize a more accurate Gentek window quote.

Explore Gentek 1700 Series Windows Request a Window Quote

Sources and Technical References

Suburban Wholesale & Supply — Gentek New Construction 1700 Series
Gentek Building Products — 1700 Series Window Collection 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 size charts, product specifications, installation instructions, certified-product records, NFRC labels, warranties, engineering, and applicable codes.

Technical note: The cited Gentek 1700 Series size guide is dated February 2018. Historical model numbers, sizes, glass packages, grids, colors, ratings, and options may have changed. Verify all selections with current Gentek documentation. This article does not replace manufacturer instructions, safety-glazing review, structural engineering, code review, or project-specific installation requirements.

Gentek 1700 Series Picture Window: Benefits and Selection Guide