Excellent structural analysis of custom steel doors. From our experience managing distributions down in the high-humidity coastal zones of Thiruvananthapuram and Attingal, the arguments you made regarding dimensional stability over traditional timber are 100% accurate.
The severe monsoon seasons in Kerala act as an immediate stress test for entryways. Property owners are quickly realizing that factory-engineered steel isn't just an aesthetic upgrade—it's a critical structural choice to combat warping, moisture absorption, and persistent termite vulnerabilities. Great write-up on the investment value!