Sparta Aluminum
Impact Rating LMI
Design Pressure +55/-65 psf
NFRC Certified
Glazing Impact-resistant glass
Made in Florida
PGT Sparta Aluminum Picture PW4120A
PGT's value-tier aluminum impact line on the 4000-series platform.
Value-tier aluminum impact fixed picture window with an integral nail-fin frame option for new-construction installations.
Impact Rating LMI
Design Pressure +55/-65 psf
NFRC Certified
Glazing Impact-resistant glass
Made in Florida
Frame finish
Impact protection, built for South Florida
The PW4120A is PGT's Sparta value-tier aluminum fixed picture impact window, with an integral nail-fin frame option for new-construction installations. LMI impact-rated for HVHZ installations.
- 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
Configurations
X = operable panel (it opens) · O = fixed panel (doesn’t open). Panels read left‑to‑right as viewed from outside (hung windows read top‑to‑bottom). Example: XO = operable on the left, fixed on the right.
Grille Styles
1" Flat/Flat
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
32 sq ft or 48 x 96 in
Design Pressure
+55/-65 psf
U-Factor
1.07–1.08
SHGC
0.3–0.77
Visible Trans.
0.1–0.82
Sizes & Pressures
| Configuration | Min size | Max size | Design pressure |
|---|---|---|---|
| Picture Window | 11 x 14.5 in | 32 sq ft or 48 x 96 in | +55/-65 psf |
Sizes shown are actual DLO frame size.
1/2" flange frame; integral nail-fin frame type available.
Glass & Energy Performance
| Glass package | U-Factor | SHGC |
|---|---|---|
| Energy Shield Max | 1.02 | 0.3 |
U-Factor / SHGC shown without grids; add-grid values vary slightly. Confirm exact ratings for your opening at quote.
Performance Certifications
Related Products
More models in the Sparta Aluminum.
PGT Sparta Aluminum Horizontal Roller HR4110A
Horizontal Roller
See price & specs
PGT Sparta Aluminum Sliding Glass Door SGD4130A
Sliding Glass Door
See price & specs
PGT Sparta Aluminum Single Hung SH4100A
Single Hung
See price & specs
PGT Sparta Aluminum Architectural AR4120A
Architectural Shape
See price & specs
Comparable from Other Brands
Other fixed window models Armor Pro installs.
Frequently Asked Questions
The PW4120A is PGT's Sparta value-tier aluminum impact fixed picture window, built for a clear, uninterrupted view since it doesn't open. It offers an integral nail-fin frame option for new-construction installations and is often paired with operable Sparta windows to fill a larger wall opening. We install it in South Florida HVHZ projects that need a code-compliant impact picture window on a budget.
Yes, the PW4120A is LMI impact-rated and HVHZ-approved, built with impact-resistant glass so it qualifies for the High-Velocity Hurricane Zone in Miami-Dade and Broward. If you're outside the HVHZ and don't need impact glazing, PGT's non-impact counterpart is the Scout PW4020A. We'll confirm which one your jurisdiction and opening require at quote.
The PW4120A picture window is sized up to about 32 square feet of glass, from a minimum of roughly 11 by 14.5 inches, and carries a design pressure of +55/-65 psf. Because it's a fixed impact unit, the area limit keeps the laminated glass within its tested rating. We'll lay out the size and confirm the design pressure for your opening when we quote.
The PW4120A uses PGT's Energy Shield Max impact glass on a 5/16-inch PVB interlayer, with a U-factor of 1.01 to 1.02 and an SHGC of 0.28 to 0.30 depending on whether grids are added, plus a condensation resistance rating of 12. The laminated impact makeup also helps quiet outside noise. For a sun-facing wall, the lower-SHGC option keeps heat gain down, and we'll go over the choices at quote.
The PW4120A comes in two standard finishes, White and Bronze, to match the rest of your Sparta windows and doors. For a decorative look it offers a 1-inch flat grid. We coordinate the finish and grid across all of your impact windows so the fixed picture unit blends with the operable ones.
There's no flat price, because the installed cost depends on the size, the glass package and grid you choose, the finish, and the condition of the opening. The integral nail-fin frame option for new construction also affects how the unit ties into the wall and the labor involved. Armor Pro gives a free, no-obligation estimate; we'll measure the opening and price the PW4120A for your project.
Yes. Sparta is PGT's value-tier aluminum impact line, large-missile impact-rated and eligible for the High-Velocity Hurricane Zone in Miami-Dade and Broward. The glass is the same laminated impact glass the premium lines use, and the approvals are real — the line simply trims the premium sizes, finishes, and high-pressure configurations to hit a lower price. The exact rating depends on the opening, which we confirm on the quote.
What you give up with Sparta is range, not code compliance. Sparta covers the core operation styles — single hung, horizontal roller, picture, architectural shapes, and a sliding glass door — in white and bronze only, with block-and-tackle balance hardware and a narrower set of sizes and design pressures. WinGuard Aluminum adds more colors, larger sizes, higher pressures, and a broader catalog including casements, awnings, and French doors. We reach for Sparta when impact compliance is required but the budget is the binding constraint.
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.