Steel Door
This information reflects our best understanding of product composition in 2015.
Hollow steel doors can be fabricated with many options depending on their intended use. This CP reviews a standard duty, flush, hollow steel door intended for interior uses where thermal insulation is not a concern. The Steel Door Institute...
Hollow steel doors can be fabricated with many options depending on their intended use. This CP reviews a standard duty, flush, hollow steel door intended for interior uses where thermal insulation is not a concern. The Steel Door Institute considers this a Level 1, Model 1 door, which is not fire-rated, but is suggested for use in a variety of situations in commercial spaces. The most common core in steel doors where insulation is not needed is honeycomb, a matrix of resin-impregnated kraft paper, which provides structure and acoustical performance. The core is attached to the door skins with a rubberized contact adhesive before channels are spot welded to the top, bottom, and sides to completely encase the core. All exposed surfaces are cleaned and receive a surface treatment to ensure paint adhesion. Then, a powder coat primer is applied to these surfaces to prevent rust. Doors may be painted once installed at the customer’s direction. Calculations for this CP are based on a steel door with the dimensions of 86 (h) x 36 (w) x 1.34 (t) inches. Knobs, hinges and other hardware required to make the door operational are not included in this CP.