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VLX 100 Double Swing / French Door in Three Lakes, FL | Sightline Windows & Doors Three Lakes
The VLX 100 Double Swing / French Door is a paired aluminum door system built for homeowners who want wide, unobstructed openings without sacrificing thermal performance or security. At Sightline Windows & Doors Three Lakes, we install this ViewLux series for Three Lakes properties ranging from lakefront cottages to new contemporary builds. The symmetrical sightlines, flush threshold, and multi-point lock hardware make it a practical upgrade over standard patio doors. As an authorized ViewLux installation partner, we back every project with factory-trained expertise and warranty-safe workmanship. Call (786) 808-5792 to schedule your free on-site measurement and written quote.
Product Overview - VLX 100 Double Swing / French Door
The VLX 100 is engineered as a true French door pair: two equal panels that swing independently from a central jamb, creating a balanced, mirror-image opening. Unlike sliding systems that always leave one panel fixed, both leaves of the VLX 100 operate, which matters when you’re moving furniture through a lakeside home in Three Lakes or hosting with the doors thrown wide open.
The aluminum construction keeps frame depths slim while handling Florida’s humidity and salt air better than wood or vinyl alternatives. The 2.56″ profile width strikes a deliberate balance: narrow enough to maximize glass area and sightlines, substantial enough to house a thermal break and multi-point locking hardware. The flush threshold eliminates the trip hazard and visual interruption of a raised sill, a detail that matters for interior-to-exterior transitions in open-concept Three Lakes homes.
Multi-point lock hardware engages at three positions along the active door edge, not just at the handle. This distributes closing force evenly, reduces frame flex over years of use, and creates a tighter seal against the jamb. For Three Lakes homeowners replacing older French doors with sagging frames or single-point latches, the difference in how the VLX 100 closes and seals is immediately noticeable.
We specify this series for primary bedroom exits, great room openings, and covered lanai transitions where the door is both a functional passage and a visual focal point. The maximum 96″ width handles most residential openings without custom engineering, though we can advise on sidelite or transom pairings for wider architectural statements.
Technical Specifications

| Specification | VLX 100 Double Swing / French Door |
|---|---|
| Frame wall thickness | 0.098″ extruded aluminum |
| Profile width | 2.56″ |
| Maximum opening width | Up to 96″ wide |
| Glass options | Clear, Frosted, Obscure, Low-E, Tempered, Laminated |
| Finish options | Premium Black, Pure White, Anodized Silver, Bronze, Champagne, Teak Wood |
| Screen options | Retractable Screen, None |
| Threshold type | Flush, low-profile |
| Locking system | Multi-point hardware |
| Energy performance | NFRC-rated with thermal break |
| Installation standard | AAMA 2400/2410 compliant |
| Perimeter sealant | AAMA 812 low-expansion foam |
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AfterPerformance Features
Thermal Efficiency
The VLX 100 uses a polyamide thermal break to separate interior and exterior aluminum surfaces, cutting conductive heat transfer. NFRC-rated performance means the numbers are third-party verified, not claimed. For Three Lakes homes running air conditioning eight months a year, this directly affects monthly utility costs.
Acoustic Performance
Laminated glass and dual-seal weatherstripping reduce exterior noise transmission. We recommend this pairing for Three Lakes properties near busier roads or for homeowners who want to close out evening lake activity without sacrificing the open feel of full glass panels.
Airtightness & Weather Seal
Compression seals at the meeting stile and perimeter gaskets at the frame interface maintain positive closure pressure. The multi-point lock hardware ensures even compression top to bottom, eliminating the gaps that develop with single-latch systems.
Waterproofing
AAMA 812 low-expansion foam sealant fills perimeter rough openings without distorting frames, while integrated sill dams and weep systems manage driven rain. Our Three Lakes installations include a final water-spray verification before we sign off.
Wind Resistance
Impact-resistant laminated glass is available for high-velocity hurricane zones. The 0.098″ wall thickness and reinforced corner construction handle positive and negative pressure loads. We verify wind-load requirements against your specific Three Lakes address during the pre-install survey.
Security & Hardware
Multi-point locking engages at the handle, deadbolt, and auxiliary points. The hardware is factory-specified to ViewLux standards; aftermarket substitutions void coverage. We install only manufacturer-authorized components to keep your warranty intact.
Color & Glass Options

Premium Black and Pure White suit the modern farmhouses and contemporary builds we’re seeing more of in Three Lakes. Both are powder-coated finishes with UV stability for Florida exposure. Anodized Silver reads as architectural and industrial, appropriate for homes with metal roof accents or concrete finishes. Bronze and Champagne carry warmth that complements Mediterranean and traditional Florida architecture without the maintenance burden of actual wood. Teak Wood is a sublimated finish that captures grain texture on aluminum, popular with homeowners who want the look of a wood French door without swelling, rot, or refinishing.
Glass selection depends on placement and privacy needs. Clear maximizes views for lake-facing openings. Low-E is our default recommendation for west and south exposures in Three Lakes, where afternoon solar gain is significant. Tempered satisfies safety glazing requirements for doors. Laminated adds impact resistance and security. Frosted and Obscure work for bathrooms, pool equipment rooms, or any location where full transparency isn’t wanted. We typically pair Retractable Screens with clear or Low-E glass installations to maintain airflow without a fixed screen door marring the sightlines.
Installation by Sightline Windows & Doors Three Lakes in Three Lakes
Every VLX 100 we install in Three Lakes follows a sequence we’ve refined across hundreds of door replacements and new construction projects. It starts with a pre-install inspection: we measure the rough opening to manufacturer tolerances, check for square and level in the existing frame or block opening, and identify any structural or flashing conditions that need correction before the door arrives.
Setting the frame is where warranty coverage lives or dies. We shim, level, plumb, and square the jamb assembly before any fasteners are driven. Racked frames cause binding, seal failure, and hardware misalignment, none of which are covered under manufacturer warranty when installation error is the cause. Our crews use laser levels and story poles, not eyeballs.
Perimeter sealing follows AAMA 812 standards with low-expansion foam sealant. High-expansion products distort aluminum frames; we’ve seen it happen on jobs where other contractors cut corners. The foam creates a continuous air and water barrier between frame and rough opening, working in conjunction with exterior flashing tape and sill pan integration.
We install to AAMA 2400/2410 compliance, which governs how fenestration interfaces with the wall system. This isn’t optional in Three Lakes; it’s what separates a door that performs for fifteen years from one that leaks in the second summer. Our final step is a water test and operational check: we verify smooth swing, proper latch engagement at all lock points, and clean sash travel.
Three Lakes building conditions matter here. The combination of high humidity, intense UV, and seasonal storm exposure means installation quality has outsized consequences. We factor in your home’s exposure, roof overhang, and drainage plane when detailing the sill and head flashing. And we clean the work area before we leave, because a job isn’t finished until you’re not finding construction debris in your landscaping.
Improper installation voids the ViewLux manufacturer warranty. That’s not fine print; it’s the standard condition. Working with Sightline Windows & Doors Three Lakes as an authorized partner protects that coverage and gives you a local point of accountability if questions arise after installation.
Frequently Asked Questions - VLX 100 Double Swing / French Door

Lead time typically runs 6 to 10 weeks from final measurement and deposit, depending on glass and finish selection. Specialty laminates or Teak Wood finishes may extend toward the longer end. Call (786) 808-5792 to check current production schedules and reserve your slot.
Doors with Low-E glass and NFRC-rated thermal break construction may contribute to whole-home energy efficiency credits under current federal guidelines, though eligibility depends on your total project scope and tax situation. We provide NFRC performance documentation with every quote for your accountant’s review. For definitive guidance, consult a tax professional familiar with energy property credits.
ViewLux provides a limited lifetime warranty on the aluminum frame and finish, with separate coverage periods for hardware, glass seals, and insulated glass units. Warranty terms require authorized installation; DIY or non-certified contractor installation voids protection. Sightline Windows & Doors Three Lakes registers every Three Lakes installation directly with the manufacturer to activate your coverage.
The VLX 100 accommodates openings up to 96″ wide in standard production. Wider openings require custom engineering or pairing with fixed sidelites, which we can design. During your free estimate, we’ll measure your existing opening and present options that maintain the symmetrical sightlines this series is known for.
Rinse frames quarterly with fresh water to remove salt and pollen accumulation, especially in Three Lakes where lake breezes carry airborne moisture and organic matter. Wash annually with mild soap and a soft brush; avoid abrasive pads or solvent cleaners that damage powder coat or anodized finishes. Lubricate hinges and lock mechanisms with a dry silicone spray annually. The multi-point hardware should be operated through its full range monthly to prevent stagnation.
Get a Quote - VLX 100 Double Swing / French Door in Three Lakes
Ready to see how the VLX 100 fits your Three Lakes home? We’ll bring sample finishes, glass swatches, and a measuring tape. Every quote is itemized, written, and free. No pressure, no deposit required to review your options. Call (786) 808-5792 or reach out through our site to schedule your on-site consultation with Sightline Windows & Doors Three Lakes.
Written by the team at Sightline Windows & Doors Three Lakes, serving Three Lakes since 2018.
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