We Manufacture Your Steel Building Kits in the USA & Ship Direct...Worldwide!



  • More durable and stronger than vinyl
  • Hard Baked on Finish for years of performance
  • Easy Installation
  • Optional Built-in “Step Saver” Trim, fully extruded frame for added strength

Plyco Series CTB500 pre-assembled horizontal thermal break windows

Commercial Window: The Plyco Series CTB500 pre-assembled horizontal thermal break windows save you time and money. This means:

Aluminum frame and grids make this window stronger and more durable than vinyl windows.

Available in popular Polar White, Hickory Moss, Bronze and Brown colors using a hard baked finish for years of performance.

Available with Tinted, Tempered, Mirrored or Safety Glass.

Completely pre-assembled and controlled under factory conditions.

Installs quickly using Plyco’s Step Saver optional trim or nailing flange.

For this month’s building specials call (800) 825-0316!

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Watch a video testimonial by a satisfied Worldwide Steel Buildings customer talking about his new steel building kit.
Use our 3D Building Designer to plan and design your own custom steel building and see what the final product will look like from Worldwide Steel Buildings.
Worldwide Steel Buildings provides a wide variety of custom options for steel building kits to produce the metal building that works best for you.

Download These Helpful Guides

Plan your custom steel garage, workshop, greenhouse, or other metal building with this free building planning kit from Worldwide Steel Buildings.

Free Building
Planning Kit

The Steel Building Info Guide from Worldwide Steel Buildings provides all the info you need for planning and building a custom steel building.

Steel Building
Info Guide

Worldwide Steel Buildings provides a free Steel Building DIY Instructions guide to help you construct your own custom metal building.

Steel Building
DIY Instructions

No Worries, No Risk, No Kidding