WinGuard Vinyl Series
Miami-Dade NOA
Florida DBPR
Approved
HVHZ
Approved
Impact Rating LMI
Design Pressure +100/-100 psf
NFRC Certified
Made in Florida
PGT WinGuard Vinyl Preferred Sliding Glass Door SGD5570
PGT's vinyl impact window family, the best-selling impact vinyl in the U.S.
Flagship vinyl impact sliding glass door supporting up to 8 panels across 40 feet. Crystal Achievement Award winner with dual-point locking and heavy-duty quad rollers.
Miami-Dade NOA
Florida DBPR
Approved
HVHZ
Approved
Impact Rating LMI
Design Pressure +100/-100 psf
NFRC Certified
Made in Florida
Frame finish
Impact protection, built for South Florida
The SGD5570 is the vinyl sliding door PGT built to compete with aluminum on size. A Crystal Achievement Award winner, it carries up to eight panels across forty feet of opening in bypass, pocket, and corner configurations, with dual-point locking and heavy-duty quad rollers that keep large panels gliding. For a homeowner who wants a wall of glass onto a lanai but prefers vinyl's thermal performance and lower cost over aluminum, this is the door that makes that possible inside the HVHZ.
Armor Pro specs the SGD5570 on impact patio openings where the budget and the energy numbers favor vinyl and the span is within its generous reach. When an opening pushes past what vinyl should carry, or the design wants the slimmest possible sightlines, the aluminum SGD770A takes over.
- Tested & certified to Miami-Dade HVHZ hurricane standards
- Vinyl frame engineered for strength and durability
- Large-missile impact-rated laminated glass
- Energy-efficient Low-E insulated glass options to control heat gain
- Professionally installed across South Florida by Armor Pro
Grille Patterns
Grille Styles
9/16" Flat Grid-Between-the-Glass13/16" Flat Grid-Between-the-Glass1" Contour Grid-Between-the-Glass
Impact Protection
Tested to withstand hurricane wind-borne debris
Engineered Strength
Built and tested to Florida product-approval standards
Energy Efficient
Low-E insulated glass options reduce heat gain
Limited Warranty
Manufacturer warranty plus Armor Pro install workmanship
At a Glance
Frame Material
Vinyl
Max Size
60 x 120 in (per panel)
Design Pressure
+100/-100 psf
U-Factor
0.78
SHGC
0.17–0.5
Visible Trans.
0.08–0.6
Sizes & Pressures
| Configuration | Min size | Max size | Design pressure |
|---|---|---|---|
| By-Pass or Pocket and 90 or 135 Corners (up to 8 panels, 4 tracks) | 22.938 x 30 in | 60 x 120 in (per panel) | +100/-100 psf |
Glass & Energy Performance
| Glass package | U-Factor | SHGC |
|---|---|---|
| Energy Shield | 0.35 | 0.29 |
| Argon/Energy Shield | 0.32 | 0.27 |
| Energy Shield Max | 0.35 | 0.19 |
| Argon/Energy Shield Max | 0.31 | 0.19 |
| SolarControl LowE2 | 0.35 | 0.18 |
| Argon/SolarControl LowE2 | 0.32 | 0.17 |
U-Factor / SHGC shown without grids; add-grid values vary slightly. Confirm exact ratings for your opening at quote.
Performance Certifications
- 26-0126.03 exp. 2031
- 23-0710.11 exp. 2026
- FL251.R42
- FL242.R35
Options
Related Products
More models in the WinGuard Vinyl Series.
Ready to install the PGT WinGuard Vinyl Preferred Sliding Glass Door SGD5570?
Armor Pro measures, permits, and installs it across South Florida — code-compliant and warrantied. Get a free, no-obligation estimate.
Comparable from Other Brands
Other sliding glass door models Armor Pro installs.
ES Windows
ES Windows Prestige ES-45T Sliding Glass Door (TB)
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Eastern Architectural Systems
EAS 623 Bertha Vinyl Impact SGD
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ECO Window Systems
Eco-Guard Sliding Glass Door Series 700
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Eurocraft
Eurocraft EC-400 Casement Door / Sliding Glass Door
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Frequently Asked Questions
The SGD5570 is PGT's flagship WinGuard Vinyl slider, supporting up to 8 panels across 40 feet of opening on as many as 4 tracks. Individual panels run up to 60 inches wide and 120 inches tall. We install it in bypass, pocket, and 90- or 135-degree corner configurations, so it can open a true wall of glass onto a lanai.
Yes. The SGD5570 carries an LMI impact rating and is HVHZ-certified for High-Velocity Hurricane Zone installations under Miami-Dade NOA 26-0126.03 (valid through April 14, 2031) and Florida Product Approval FL251.R42. It's rated to a design pressure of +100/-100 psf. We install it across Miami-Dade and Broward and confirm the active approval on your quote.
We spec the vinyl SGD5570 on impact patio openings where the budget and the energy numbers favor vinyl and the span is within its generous 40-foot reach. When an opening pushes past what vinyl should carry, or the design wants the slimmest possible sightlines, the aluminum SGD770A takes over. We'll recommend the right one after measuring your opening.
The SGD5570 comes standard with a dual-point locking mechanism, heavy-duty tandem (quad) rollers that keep large panels gliding, hidden installation screws, and raised pull handles. Recessed pulls are available as an option. It's a Crystal Achievement Award winner, which reflects the engineering behind moving panels this large smoothly.
The SGD5570 offers PGT's Energy Shield, Energy Shield Max, and SolarControl LowE2 glass packages, with optional argon fill, all on a 1-1/16 inch laminated insulating glass unit. U-factors run from about 0.31 to 0.35 and SHGC from about 0.15 to 0.29 depending on glass and grids. For the lowest solar heat gain we'd recommend the Argon/SolarControl LowE2 package.
The SGD5570 frame comes in White (standard), Beige, Bronze, and Black, plus Black/White and Bronze/White two-tone combinations. Grid options include 7/8-inch simulated divided lite and several flat or contour grid-between-the-glass profiles. We'll help you match the finish to your home and lanai at the free estimate.
WinGuard Vinyl is the vinyl version of PGT's flagship impact line and the best-selling impact vinyl in the country. It carries the same Diamond Glass laminated impact glazing and HVHZ approvals as the aluminum line, but on a 3-1/2 inch welded vinyl frame that insulates better and never needs paint. The difference comes down to span and pressure: aluminum handles the oversized and highest-load openings, vinyl handles the rest at a lower installed cost. Many projects use both under the WinGuard name.
Yes. WinGuard Vinyl is large-missile impact-rated and eligible for Miami-Dade and Broward HVHZ installation, carrying Miami-Dade Notices of Acceptance across its operation styles. It's the line we install most often on standard South Florida residential replacements because it clears the code, costs less than aluminum, and runs tighter thermally. The exact wind rating depends on the size and configuration, which we confirm on the quote.
PGT has built impact windows and doors in Venice, Florida since 1980 and is the largest impact-window and -door manufacturer in the country. It was the first company to develop impact-resistant products that met Miami-Dade County's hurricane code after Hurricane Andrew, and the line is engineered specifically for Florida conditions. PGT is now part of the MITER Brands family, alongside WinDoor, ECO, and NewSouth, but the products are still made in Florida under the PGT name.