why not use hot-rolled steel doors

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The three most common steel types are cold rolled steel, galvannealed steel, and galvanized steel. Cold Rolled Steel (CRS) is suitable for most interior applications, is uncoated steel a...
A simple field test can determine if a door or frame is galvanized or cold rolled steel, however this test will not determine if the steel is A60, A40 or G90. The Tech Tip can be viewed here.
Thermal Bow is a temporary condition which occurs in metal doors mainly due to the temperature differential from one side of the door to the other. This may occur in exterior doors when direct sun ...
HRS
Levels and Models (covered in ANSI A250.8 (SDI 100) "Recommended Specifications for Standard Steel Doors and Frames") are SDI term aid in the selection and specification pr...
Falcon SZ Series Door is the economy Steelcraft commercial grade door recommended light commercial applications when architectural specification are not needed. Options: The SZ-Series door is...
STC stands for Sound Transmission Class. An STC (Sound Transmission Class) is a single number rating system derived from measured values of sound transmission loss in accordance with ASTM E90 and...
GrainTech® is a Steelcraft door option which provides a wood grained pattern which is embossed into both face sheets of the door. GrainTech doors are factory stained and top coated with a cle...
No, steel stiffeners are not required in Hollow Metal doors, they are one of many optional core available. Per ANSI/SDI A250.8 and ANSI/HMMA 867, core construction are optional o...