Oak Tree Building Products, LLC

​OTBP

Wojan​ Window and Door

Wojan Window & Door manufactures custom commercial aluminum windows, sliding glass doors, and terrace doors. Our products are engineered for a broad range of commercial and architectural applications and include models designed for high-rise, blast-mitigating, large missile impact, and historic projects.

Our company’s moderate size is an advantage in that we are responsive and flexible; not weighed down with a lot of organizational layers that can hold up decision-making or product development. We routinely adapt our products and accessories to the not-so-standard requirements of different projects. Agile and adaptable. That’s nearing 75 years of custom manufacturing experience at work and the Wojan advantage.

WINDOWS

Single Hung

Double Hung

Horizontal Slider 

Projected

Fixed

Blast Resistant

Impact

DOORS

Sliding Glass

Terrace

Transoms and Sidelites