double casement window

Double Casement Windows

Enhance the look of your business’s exterior with double casement windows. Portella’s Exterior product line has sleek features that will make your business more attractive to clients. Our double casement windows have a narrow sight line that gives any an updated and modern appearance.

Beautiful double casement windows are a great way to upgrade your . Outdated and unappealing windows can cost you money and potential clients. Portella’s double casement windows will showcase the best your business has to offer and invite customers to learn more about your business. The timeless steel and glass profile outlined by the natural outdoor light shining into your space will greet every customer as they walk in.

Created with you, the business owner in mind, our double casement windows are budget-friendly. And due to their tighter seal, these windows are energy efficient.

Additional benefits of double casement windows include: excellent ventilation, great views of the outside, easy to clean, hard to break into, and effortless opening and closing

You can also choose from various double casement window custom paint options, shapes, and sizes. Portella has comprehensive experience with boutique commercial clients and historical replacement, so you can trust us to turn your into a beautifully designed masterpiece.

double casement window
double casement window

Technical Specifications

Portella’s double casement windows are precision built with high quality North American steel and glass. The specifications include:

  • Carbon Steel
  • Double glazed (single and triple available)
  • Glass: Cardinal 366 over clear tempered
  • Spacer: Dark Bronze
  • Glass Thickness 7/8” overall
  • Glazing Orientation: Exterior
  • True divided lite construction with 1 ¼” muntin bars
  • Double casement designed with fixed center astragal
  • Hinges: Adjustable steel post in barrel w ball bearing
  • Window Lock: Latch sash lock
  • Window Operation: Stay bar
  • Available in standard and custom paint options: grey, pewter, gun metal, chestnut brown, dark bronze and black
  • Continuous steel mounting flanges with orientation options
  • Minimum size 24” width 12” height
  • Maximum size 72” w x 96” height

Double Casement Window Details

Portella provides the highest quality double casement window solutions for s. Create a distinct look for your  with our various custom paint selections. Our work is guaranteed and all Portella double casement windows have a special extended warranty that surpasses industry standards.


Our double casement windows can be customized for any type of  application. We work one-on-one with architects and builders to fit precise specifications.  Due to our advanced factory glazing and manufacturing processes, we’re able to keep everything in-house – this allows us to give you the best quality double casement windows at an unbeatable price.


Portella’s double casement windows are made to endure the most extreme climate types and weather conditions. Additionally, our windows have been hurricane force tested and come with hurricane impact rated systems.


No matter what type of double casement window you choose, we promise a unique product that will make your business stand out. Each of our double casement windows has distinct features. Whether you want a modern, minimalist,traditional or historic design for your business, we promise a unique look. Due to the flexibility of building custom projects, we are able to give you the best possible product that meets your needs.

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How to Order

Each of our double casement windows are made to order based on your needed specifications. We make sure to get overall sizes, details about your project goals and your location to find out the best window for your state’s regulations and climate.  


The first step is to contact our team. We will answer all of your questions and assign you to a Project Manager, who will guide through each step of your project. After determining the best double casement window for your business, your Project Manager will provide a quote. Once approved, our team will put together drawings and specifications for every part of your project. Lead times vary depending on the extent of your project, but the typical time frame to create your double casement windows is between 16 and 19 weeks.

Get in touch with us today to be assigned to your designated Project Manager who will make sure your double casement window project becomes a reality.

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Request a Quote

Get in touch to request a quote and get your project moving.

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