ΠΟΡΤΕΣ ΑΣΦΑΛΕΙΑΣ

https://erickdiyf242.tumblr.com/post/185819048586/%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-%CE%B1%CE%BB%CE%BB%CE%B1%CE%B3%CE%B7-its-not-as-difficult

It's been a long time considering that we discussed security doors, so we thought it was high time for a refresher. Let's begin by advising ourselves what they are and why we require them. What is a security door,