ΠΟΡΤΑ ΑΣΦΑΛΕΙΑΣ

https://erickdiyf242.tumblr.com/post/185814727626/20-myths-about-%CE%B8%CF%89%CF%81%CE%B1%CE%BA%CE%B9%CF%83%CE%BC%CE%B5%CE%BD%CE%B5%CF%83-%CF%80%CE%BF%CF%81%CF%84%CE%B5%CF%83-busted

It's been quite a while since we discussed security doors, so we thought it was due time for a refresher. Let's begin by reminding ourselves what they are and why we require them. What is a security door, and