Portella Custom Steel Windows

Portella Custom Steel Windows

Portella Steel Windows Chicago
Portella Steel Windows Chicago

Why choose Portella?

Our steel windows exceed all industry standards so they are not only beautiful—they are built to last.

Portella Windows feature:
– Narrow sight lines
– Dual, factory glazed in a controlled environment
– Deep steel divisions allow for thicker glazing combinations and improved energy values
– A continuous 1/4″ x 3″ steel mounting flange and flashing for increased structural integrity and moisture protection
– Insulated, Low-E glass meets current energy rating requirements and UV protection
– Three factory finish options: dark bronze, steel gray, charcoal (custom finishes also available)
– Roto-Crank Adjusters or Hold-Open Stays
– Hiqh-quality bronze hardware
– Steel screens optional

Steel Windows

Portella’s steel windows are made from 100% recyclable, durable steel. They exceed all industry standards and create a luxurious, unique, and special trademark to any project. Their are four product lines for steel windows – thermally broken, classic, storefront exterior, and storefront interior. Each with its own characteristics to create a specific look and feel – historic, traditional, modern – all provide superior climate durability and are fit to your project’s custom specs.

Portella Steel Windows
Portella Steel Windows


Steel Windows Details

Portella’s steel window solutions for awnings, fi

Portella WIndows
Portella WIndows

xed windows, and French casement options are crafted in carbon steel with several standard and custom paint options. We specialize in oversize construction and guarantee our work for every project.

Technical Specifications

  • Carbon steel, stainless steel and bronze options
  • NFRC Rated meeting new Energy Code Requirements and Title 24
  • Double glazed (single and triple available)
  • Glass: Cardinal 366 over clear tempered
  • Available in standard and custom paint options
  • True divided lite construction
  • Hinges: Adjustable steel post in barrel with ball bearing
  • Continuous steel mounting flanges with orientation options


If you are interested in more information on these windows, Contact us today for a FREE Estimate. Feel free to read our customer reviews online.