Hollow Metal Doors and Frames
Hollow metal is the workhorse of Division 8 and the default anywhere a door has to take abuse, hold a fire rating, or live outdoors in salt air. 1NSG Corp supplies and installs hollow metal doors and frames across South Florida.
What we supply and install
Flush and vision lite doors, welded and knocked down frames, borrowed lites, louvered doors for mechanical rooms, and galvannealed assemblies for exterior and coastal exposure.
Why galvannealed matters here
A standard steel door six blocks from the water will bleed rust through the paint within a couple of seasons. Galvannealed substrate with a proper prime and finish is the difference between a door that lasts and a callback.
Frames in existing masonry
Retrofitting a frame into an existing opening is where most jobs go sideways. We field measure the actual opening rather than trusting the drawing, and we anchor to what is really behind the wall.
Send us a door schedule or photos of the openings and we will price the package.
Frequently Asked Questions
Why does galvannealed steel matter in South Florida?
A standard steel door within a few blocks of the water will bleed rust through the paint within a couple of seasons. Galvannealed substrate with a proper prime and finish is the difference between a door that lasts and a callback.
Can you fit a new frame into our existing masonry opening?
Yes, and this is where most jobs go sideways. We field measure the actual opening rather than trusting the drawing, and we anchor to what is really behind the wall.
Do you supply only, or supply and install?
Both. We can furnish the package for another installer, or supply and install the full opening under our general contractor license.