WinGuard Aluminum Series
Florida DBPR
Approved
Impact Rating LMI
Design Pressure +90/-90 psf
NFRC Certified
Made in Florida
PGT WinGuard Aluminum SGD770A Sliding Glass Door
PGT's flagship aluminum impact line, the reference impact-window platform in Florida.
Flagship aluminum impact sliding glass door in WinGuard, the workhorse SGD across the catalog. Diamond Glass laminated glazing, LMI for HVHZ.
Florida DBPR
Approved
Impact Rating LMI
Design Pressure +90/-90 psf
NFRC Certified
Made in Florida
Impact protection, built for South Florida
The SGD770A is the aluminum sliding door Armor Pro installs on the widest, most exposed openings in a WinGuard project. As the workhorse of the WinGuard Aluminum line, it carries the high design pressures a coastal Miami-Dade or Broward address demands while keeping the slim aluminum sightlines that make a lanai or pool-deck opening read as glass rather than frame. Diamond Glass laminated impact glazing on the 770-series platform gives it the storm rating, and the aluminum frame lets panels run larger and taller than the vinyl SGD can.
Armor Pro specs the 770A when a homeowner wants a big, clean patio opening in the hurricane zone and the span or the pressure rules out vinyl. For the same opening with narrower interlocks and a more view-driven look, the SGD770NS variant trades a little frame for more glass; for inland or budget projects the vinyl SGD5570 covers the role at lower cost.
- Florida Building Code product-approved
- Aluminum frame engineered for strength and durability
- Large-missile impact-rated laminated glass
- Energy-efficient Low-E insulated glass options to control heat gain
- Corrosion-resistant finishes for coastal applications
- Professionally installed across South Florida by Armor Pro
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
Corrosion Resistant
Coastal-grade finishes for salt-air durability
Limited Warranty
Manufacturer warranty plus Armor Pro install workmanship
At a Glance
Frame Material
Aluminum
Max Size
60 x 96 in or 48 x 120 in (per panel)
Design Pressure
+90/-90 psf
U-Factor
1.11–1.16
SHGC
0.25–0.62
Visible Trans.
0.06–0.64
Sizes & Pressures
| Configuration | Min size | Max size | Design pressure |
|---|---|---|---|
| Sliding glass door (by-pass, pocket, 90°/135° corner) | 43 x 78 in | 60 x 96 in or 48 x 120 in (per panel) | +90/-90 psf |
| Sliding glass door, window unit | 43 x 30 in | 60 x 96 in or 48 x 120 in (per panel) | +90/-90 psf |
Glass & Energy Performance
| Glass package | U-Factor | SHGC | VT | CR |
|---|---|---|---|---|
| Blue | 1.16 | 0.41 | 0.51 | 12 |
| Bronze | 1.143 | 0.377 | 0.243 | 12 |
| Clear | 1.135 | 0.615 | 0.635 | 12 |
| Green | 1.135 | 0.475 | 0.56 | 12 |
| Gray | 1.14 | 0.358 | 0.196 | 12 |
U-Factor / SHGC shown without grids; add-grid values vary slightly. Confirm exact ratings for your opening at quote.
Performance Certifications
- FL251.R42
- FL242.R35
Related Products
More models in the WinGuard Aluminum Series.
Comparable from Other Brands
Other sliding glass door models Armor Pro installs.
ES Windows
ES Windows Prestige ES-45T Sliding Glass Door (TB)
See price & specs
Eastern Architectural Systems
EAS 623 Bertha Vinyl Impact SGD
See price & specs
ECO Window Systems
Eco-Guard Sliding Glass Door Series 700
See price & specs
Eurocraft
Eurocraft EC-400 Casement Door / Sliding Glass Door
See price & specs
Frequently Asked Questions
The SGD770A is PGT's flagship WinGuard Aluminum impact sliding glass door, the workhorse SGD in the WinGuard catalog. We spec it for the widest, most exposed patio and lanai openings in the hurricane zone, where the span or the wind pressure rules out vinyl. Its aluminum frame lets panels run larger and taller than the vinyl SGD while keeping slim sightlines, and it uses PGT's Diamond Glass laminated impact glazing on the 770-series platform.
Yes. The SGD770A is LMI (Large Missile Impact) rated and HVHZ-approved for Miami-Dade and Broward installations. It carries a design pressure of up to +90/-90 psf, which lets it stand up to the high winds a coastal South Florida address faces. We confirm the current approval and the design pressure for your specific opening at the time of quote.
Each panel on the SGD770A can run up to 60 inches wide by 120 inches tall, and standard by-pass, pocket, and 90- or 135-degree corner configurations max out at 60 by 96 inches per opening unit. There is also a window-unit version that starts as small as 43 by 30 inches. We'll lay out the panel count and configuration that fits your opening and verify the size against the approval before ordering.
The SGD770A is available as a by-pass slider, a pocket door that disappears into the wall, and as 90-degree or 135-degree corner units, plus a window-unit (countertop) version. Glass is available as laminated or laminated insulating, with packages ranging from clear to tinted and Low-E options that put SHGC anywhere from about 0.28 up to 0.62. We'll recommend a configuration and glass package based on how exposed and how view-driven your opening is.
The SGD770A frame is a non-thermally-broken aluminum platform, so U-factors run about 1.11 to 1.16 depending on glass thickness, with SHGC from roughly 0.28 to 0.62 across the tint and Low-E options. If lowering solar heat gain is the priority, packages like SG or G2 glass bring SHGC down to about 0.28 to 0.30. The frame depth ranges from about 5.06 inches up to 9.16 inches depending on configuration, which we account for in the wall opening at survey.
Installed cost depends on the opening size, the number of panels, the configuration (by-pass, pocket, or corner), the glass package, and the condition of the opening, so Armor Pro provides a free estimate rather than a flat price. A pocket or corner unit on a large lanai will cost more than a standard two-panel slider. If your span or pressure does not require aluminum, the SGD770NS variant offers narrower interlocks for more view, and the vinyl SGD5570 covers inland or budget projects; we'll help you weigh the options at quote.
WinGuard Aluminum is PGT's flagship aluminum impact line and runs the full operation range on one extrusion platform: single hung, horizontal roller, casement, awning, fixed picture, architectural shapes, plus sliding glass doors and French doors. Because every style shares the same frame family, a whole house can be specified consistently instead of mixing systems opening by opening. It's been PGT's reference impact-window platform in Florida since 1998.
Yes. Every WinGuard Aluminum product is large-missile impact-rated and eligible for the High-Velocity Hurricane Zone, which covers Miami-Dade and Broward counties. The line carries one of the deepest Miami-Dade NOA libraries in the industry, glazed with PGT's Diamond Glass laminated impact glass. The exact design pressure depends on the size and configuration of each opening, which we confirm against the Florida Building Code on your 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.