RTS-430 Casement Window Installation in a High-Rise Apartment
Form and function shouldn’t be competing priorities in design — they should be fused together. That’s exactly what we did with this custom RTS-430 casement window assembly, now the centerpiece of a stunning high-rise apartment building.
This installation isn’t just about views — it’s about comfort, efficiency, and clean symmetry. The design complements the building’s geometry while delivering serious performance year-round.
The Power of Thin Sight Lines
Architects love the RTS-430 for one reason: minimal profiles with maximum punch.
Our thermally broken steel system gives you the strength of steel with the slimness designers crave.
| Feature | Benefit |
|---|---|
| Thermally broken design | Keeps interiors warmer in winter, cooler in summer |
| Slim steel profiles | Clean aesthetic that doesn’t interrupt the view |
| NFRC certified | Meets top-tier performance standards |
| Custom fabricated | Every unit is tailored to the project |
What Makes RTS-430 Different
It’s not just another steel window. It’s Optimum’s take on timeless performance, tested to outperform the rest.
| Specification | Value |
|---|---|
| Air Infiltration | 0.03 cfm/ft² |
| Water Resistance | 6.0 psf |
| Structural Load (DP) | 70 psf |
| U-Factor (Casement) | 0.24 |
| SHGC | 0.39 |
| Glazing Thickness | Up to 1 3/8” |
These numbers don’t just hit the mark — they go above industry standard. You get true durability without losing light or lines.
Why It Belongs in High-Rise Projects
Steel is a natural fit for urban environments. But this isn’t just steel — this is performance steel.
RTS-430 windows are:
- Tested to 105 psf wind load
- Outfitted with compression gasket systems
- Fully thermally broken
- Engineered for comfort on any floor
Whether it’s sleet, sun, or salt air — RTS-430 holds its shape and seals tight.
Sustainability Built In
Every RTS-430 window is made from recycled stainless steel, reducing environmental impact while raising aesthetic standards. All powder coatings meet AAMA 2604 standards and offer custom color options that won’t fade.
And yes, the thermal break reduces HVAC load — which means lower energy bills without touching the thermostat.
Real Projects, Real Results
This installation proves that steel windows can be energy efficient and still look sharp.
No bulk. No compromise. Just clean lines, clear views, and comfort that lasts.
So if you’re designing high-end residential, commercial, or landmark buildings — the RTS-430 doesn’t just meet your spec sheet. It becomes the highlight.
Want More Specs?
| Product | RTS-430 |
|---|---|
| Frame Depth | 1 ⅞” |
| Operation | Fixed, In-Swing, Out-Swing, Hopper, Awning |
| Hardware | Multi-Point or Single-Point |
| Finish | Super Durable Powder Coat |
| Muntin Options | SDL & TDL |
For architects or builders needing CAD drawings, shop drawings, or performance data, just reach out. We fabricate every unit in-house, made to your specs.
When design and performance align, you get more than a window. You get a feature that transforms the space — like this one did.
RTS-430 casement windows: Always built with comfort and style in mind.