Sparta Aluminum
Impact Rating LMI
Design Pressure +55/-65 psf
NFRC Certified
Glazing Impact-resistant glass
Made in Florida
PGT Sparta Aluminum Single Hung SH4100A
PGT's value-tier aluminum impact line on the 4000-series platform.
Value-tier aluminum impact single-hung on the 4000-series frame. Block-and-tackle balance, traditional sweep or bottom lock, LMI for HVHZ.
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 SH4100A is PGT's Sparta value-tier aluminum single-hung impact window, available with equal or unequal vent splits. Block-and-tackle balance hardware, traditional sweep lock or bottom lock, and gasket seals at frame corners. 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
53.125 x 78 in
Design Pressure
+55/-65 psf
U-Factor
1.09
SHGC
0.25–0.63
Visible Trans.
0.04–0.72
Sizes & Pressures
| Configuration | Min size | Max size | Design pressure |
|---|---|---|---|
| O/X Equal | 12 x 29.75 in | 53.125 x 78 in | +55/-65 psf |
Sizes shown are actual DLO frame size.
1/2" flange frame type.
Glass & Energy Performance
| Glass package | U-Factor | SHGC |
|---|---|---|
| Energy Shield Max | 1.09 | 0.29 |
U-Factor / SHGC shown without grids; add-grid values vary slightly. Confirm exact ratings for your opening at quote.
Performance Certifications
Options
Related Products
More models in the Sparta Aluminum.
PGT Sparta Aluminum Horizontal Roller HR4110A
Horizontal Roller
See price & specs
PGT Sparta Aluminum Picture PW4120A
Fixed Window
See price & specs
PGT Sparta Aluminum Sliding Glass Door SGD4130A
Sliding Glass Door
See price & specs
PGT Sparta Aluminum Architectural AR4120A
Architectural Shape
See price & specs
Ready to install the PGT Sparta Aluminum Single Hung SH4100A?
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 single hung models Armor Pro installs.
Frequently Asked Questions
The SH4100A is PGT's value-tier Sparta aluminum impact single-hung, built on the 4000-series frame and designed for budget-conscious South Florida replacement projects. It uses block-and-tackle balance hardware and is available in equal or unequal vent splits, so we install it in bedrooms, hallways, and other openings where a clean traditional single-hung makes sense. Because it's LMI impact-rated, you get hurricane protection without the cost of PGT's premium lines.
Yes. The SH4100A is LMI (Large Missile Impact) rated and HVHZ-approved, so it's cleared for installation throughout Miami-Dade and Broward's High-Velocity Hurricane Zone. We'll confirm the specific approval and design pressures against your exact opening at the time of quote.
The SH4100A's O/X equal configuration goes up to 53.125 inches wide by 78 inches tall, with a minimum size of 12 by 29.75 inches. It carries a design pressure rating of +55/-65 psf. We size each window to your opening and confirm the rating holds for that dimension before installation.
The SH4100A comes with PGT's Energy Shield Max impact glass, rated at a U-factor of 1.09 and an SHGC of 0.29 (0.27 when ordered with grids). All ratings are based on 5/16-inch PVB impact laminate. We'll walk you through whether the standard or with-grid glass package fits your energy and look preferences.
The SH4100A is offered in two standard frame finishes, White and Bronze, with no extra-cost custom colors on this value-tier line. For grids, you can add a 1-inch flat/flat profile, and hardware comes standard with stainless-steel assembly screws plus a choice of traditional sweep lock or bottom lock. We help you match the finish to your existing windows during the estimate.
Installed pricing for the SH4100A depends on the size of each window, the glass package you choose, and the condition of your opening. As an installer, Armor Pro provides a free in-home estimate so you get an accurate number for your specific project rather than a generic per-window price. The Sparta line is PGT's value tier, so it's typically one of the more affordable impact options we install.
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.