Commercial & Architectural Series
Impact Rating LMI
Design Pressure +70/-70 psf
Energy
ES Windows ES-P251 Projected Window
ES Windows's commercial and architectural glazing — storefront, curtain wall, window wall, and high-pressure impact commercial systems.
Inward-projecting, polyamide thermally-broken AW-70 window with a +70/-70 PSF design load and a 0.37 U-value for combined hurricane resistance and thermal efficiency.
Impact Rating LMI
Design Pressure +70/-70 psf
Energy
Impact protection, built for South Florida
The ES-P251 is an inward-projecting, thermally-broken architectural window rated AAMA AW-70, built on a 2 1/2″ frame with a 2 3/4″ sightline and available in inward casement, hopper, tilt-and-turn, and fixed configurations. It uses polyamide thermal-break technology for a strong 0.37 U-value alongside a +70/-70 PSF design load and 15 PSF water infiltration, accepting 1″ insulating glass at maximum sizes of 60″×60″ fixed and 60″×36″ operable. The structurally-glazed vent, 4-arm heavy-duty stainless hinge, and multipoint lock make it a hurricane-resistant, thermally efficient option for American and Latin-American markets.
- 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.
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
Design Pressure
+70/-70 psf
U-Factor
0.37
Impact Rating
LMI
Frame Depth
2.5 in
Sizes & Pressures
| Configuration | Design pressure |
|---|---|
| Casement / Tilt and Turn (X, XX) | +70/-70 psf |
| Hopper | +70/-70 psf |
| Fixed | +70/-70 psf |
Glass & Energy Performance
| Glass package | U-Factor | SHGC |
|---|---|---|
| 1" Insulating Glass (1/4" + 1/2" spacer + 1/4") | 0.37 | — |
Performance Certifications
Energy-performance data on file (manufacturer-published; not third-party certified).
Options
Related Products
More models in the Commercial & Architectural Series.
Ready to install the ES Windows ES-P251 Projected Window?
Armor Pro measures, permits, and installs it across South Florida — code-compliant and warrantied. Get a free, no-obligation estimate.
Frequently Asked Questions
The ES-P251 is an inward-projecting, thermally-broken aluminum architectural window built on a 2-1/2-inch frame with a slim 2-3/4-inch sightline. It's available in inward casement, hopper, tilt-and-turn, and fixed configurations, and uses a structurally-glazed vent with a heavy-duty four-arm stainless hinge and multi-point lock. Armor Pro installs the ES-P251 where you want an energy-efficient, hurricane-resistant operable window that opens inward.
Yes. The ES-P251 carries a Large Missile Impact (LMI) rating and is HVHZ-approved, so it can be permitted in the Miami-Dade and Broward High-Velocity Hurricane Zone. It is also rated to the AAMA AW-70 architectural-window performance class. As your installer, Armor Pro confirms the specific approval and design pressure your opening requires before we permit and order.
The ES-P251 uses polyamide thermal-break technology to reach a strong 0.37 U-factor with 1-inch insulating glass (1/4-inch + 1/2-inch spacer + 1/4-inch). It also resists 15 psf of water infiltration, pairing thermal efficiency with hurricane resistance. We'll review the glass package with you so the ES-P251 meets your energy goals for the opening.
The ES-P251 reaches a maximum of 60 by 60 inches in the fixed configuration and 60 by 36 inches as an operable vent, with a +70/-70 psf design load across configurations. Because the pressure your opening must meet depends on its size and wind exposure, we verify the rating your specific window needs at quote. We'll make sure the ES-P251's size and rating fit your project before ordering.
The ES-P251 is offered as an inward casement, hopper, tilt-and-turn, or fixed window, so you can choose how the vent opens for ventilation and cleaning. Frame finishes include anodized, painted, and wood-grain options, and hardware includes a multi-point lock with a heavy-duty stainless four-bar hinge or butt hinges. We'll help you pick the operation and finish that fit each opening.
Installed pricing for the ES-P251 depends on the window size, the configuration (casement, hopper, tilt-and-turn, or fixed), the frame finish, and the condition of the existing opening, so there's no single price. Armor Pro handles measurement, anchoring (head receptor, sub-sill, or strap anchors), permitting, and code-compliant installation per the manufacturer's install manual. Contact us for a free, no-obligation estimate and we'll measure your openings and quote the ES-P251.
This is ES Windows's house-brand catalog for commercial, condo, and mid- to high-rise architectural work, distinct from the residential tier lines. It covers aluminum storefront, stick and structural-silicone-glazed curtain wall, pre-glazed impact window wall, project-in and project-out operable windows, and commercial sliding and lift-slide doors. We reference it for light-commercial and architectural-spec projects rather than standard home replacement.
The U.S.-market impact systems are the ones that carry real HVHZ ratings: the ES-8860 window wall is tested to plus and minus 150 psf, the ES-6000/6100 sliding door reaches plus 120 / minus 135 psf with multiple Miami-Dade NOAs, and the ES-7500/7600 window wall and several others carry large- and small-missile certification. Some of the metric storefront and curtain-wall framing systems are Latin-American architectural products without Florida approval, so we verify approval status before specifying any of them on a Florida job.
ES Windows is the residential and light-commercial fenestration brand of Tecnoglass Inc. (NYSE: TGLS), and the products are manufactured at the company's complex in Barranquilla, Colombia. What makes the brand unusual is that the parent makes its own architectural glass and aluminum extrusions and then assembles the finished windows and doors in-house, so a single company stands behind the whole assembly rather than buying glass and frames from outside suppliers. We install and service ES Windows products throughout South Florida.