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U-Factor & SHGC for Sliding Glass Doors ExplainedEnergy Efficiency: U-Factor & SHGC for Doors ExplainedPivot Door Thermal Performance: U-Factor ExplainedSliding Glass Door Thermal Performance: U-Factor ExplainedBi-Fold Door Thermal Performance: U-Factor ExplainedStorefront Energy Code: What Every Builder Must Know in 2026Exterior Bifold Doors: Weather Resistance GuideU-Factor & SHGC for Sliding Glass Doors ExplainedEnergy Efficiency: U-Factor & SHGC for Doors ExplainedPivot Door Thermal Performance: U-Factor ExplainedSliding Glass Door Thermal Performance: U-Factor ExplainedBi-Fold Door Thermal Performance: U-Factor ExplainedStorefront Energy Code: What Every Builder Must Know in 2026Exterior Bifold Doors: Weather Resistance Guide
Gladiator
Vol. IJacksonville, FloridaThursday, September 17, 2026

The Gladiator Dispatch

Doors · Windows · Modern Living — Straight From the Factory Floor

★ Factory-Direct Aluminum ★ 15-Year Warranty ★ Free Insured Shipping ★ Made in the USA ★ Nationwide Delivery
U-Factor & SHGC for Sliding Glass Doors Explained
Sliding Doors

U-Factor & SHGC for Sliding Glass Doors Explained

What Are U-Factor and SHGC, and Why Do They Matter? U-factor measures how much heat flows through a window or door assembly, while SHGC (Solar Heat Gain Coefficient) measures how much solar radiation passes through the glass into your home....

Gladiator Window & Doors7 min readAugust 17, 2026
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Why Gladiator · What to Watch For

What Sets Us Apart

01
Factory-Direct Pricing
You buy straight from the maker — no dealer markup, no showroom overhead. Watch for "direct" sellers who still route through a middleman.
02
Real Thermal Performance
NFRC-rated U-factors and genuine thermal breaks — not just a sleek frame. If a quote skips the numbers, ask why.
03
Coastal-Grade Aluminum
6063-T5 alloy engineered for salt air and wind load, backed by a 15-year warranty. Thin extrusions are the red flag.
04
Freight Done Right
Insured, liftgate-equipped, nationwide delivery with a Bill of Lading on every shipment. No surprise dock fees.
Latest Stories
Tips From the Floor
The Pro Desk
Tip No. 01
Measure the rough opening, not the old door
Order to the framed opening with proper deduction for shims and flashing. The most common sizing mistake on big panel systems.
Tip No. 02
Spec the glass before the frame color
Low-E coating and the right U-factor drive comfort and energy bills far more than finish. Lock performance first, looks second.
Tip No. 03
Plan the header for wide spans early
A 16-foot opening needs structural support designed in before drywall. Loop your contractor in at the quote stage, not install day.
Coming Down the Pipeline
New & Upcoming
Coming Soon

Slim-Frame Pivot Door 2.0

A narrower sightline, magnetic soft-close, and a concealed pivot hinge rated for oversized slabs.

Arriving Q3 2026
Coming Soon

Motorized Louvered Pergola

App-controlled aluminum louvers that pivot for sun or seal for rain, with integrated LED and a wind sensor.

Arriving Q3 2026
Coming Soon

Black-on-Black Bi-Fold Series

Matte black frames, black hardware, black track — a fully monochrome folding wall for modern builds.

Arriving Q4 2026
In This Issue · Outdoor Living

Define the Backyard. Aluminum Pergola Kits, Engineered to Last.

A patio without structure overhead always feels unfinished. See how a factory-direct aluminum pergola sharpens the architecture and creates a room you'll actually use.

Explore Pergolas →
Keep Reading
Quick Reads
Aug 17
U-Factor & SHGC for Sliding Glass Doors Explained
Aug 15
Energy Efficiency: U-Factor & SHGC for Doors Explained
Aug 5
Pivot Door Thermal Performance: U-Factor Explained
Jul 23
Sliding Glass Door Thermal Performance: U-Factor Explained
Jul 7
Bi-Fold Door Thermal Performance: U-Factor Explained
Jul 2
Storefront Energy Code: What Every Builder Must Know in 2026
Jan 20
Exterior Bifold Doors: Weather Resistance Guide
Aug 17
U-Factor & SHGC for Sliding Glass Doors Explained
Aug 15
Energy Efficiency: U-Factor & SHGC for Doors Explained
Aug 5
Pivot Door Thermal Performance: U-Factor Explained
Jul 23
Sliding Glass Door Thermal Performance: U-Factor Explained
Jul 7
Bi-Fold Door Thermal Performance: U-Factor Explained
Jul 2
Storefront Energy Code: What Every Builder Must Know in 2026
Jan 20
Exterior Bifold Doors: Weather Resistance Guide
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