05/07/2026
This is a big one — and something we see all the time in the field.
A lot of openings look “right” at first glance, but when you really break them down, the full assembly isn’t there or wasn’t installed the way it should be.
That’s where issues show up — inspections, life safety, and long-term performance.
We’re proud to be a certified Total Door Systems installer. They build a true system, and the quality and craftsmanship show.
At Diversified Systems, we focus on getting the entire opening right from the start — not piecing components together and hoping it passes.
It matters.
Diversified Systems
We do what we say we’re going to do — and we do it right.
Most architects assume that if they see a label on a door, that it is a rated door assembly.
Most of the time, that assumption is wrong.
Here's what the IBC actually requires — and what gets missed in spec after spec:
A smoke-and-fire-rated door isn't just about the panel. It's the entire assembly: hardware, gaskets, and closer — all tested together, all working as one system.
When those components come from different manufacturers, the burden of proving assembly compliance falls on the contractor. That means field testing, re-certification risk, and schedule exposure that nobody budgeted for.
Total Door Systems solves this at the source. Every component — frame, panel, hardware — is engineered, manufactured, and assembled in our Waterford, Michigan, facility as a single certified system.
One assembly. One certification. Zero ambiguity at inspection.
If you're specifying life safety openings, we should talk.