We will be taking a closer look at the EFZ-120HA5 which is aimed at what SilenX is known for. Quiet operation. It also has two other characteristics that is a must have for many of us and that is great performance and an affordable price tag. The 120HA5 is of the tower design and weighs in at 648 grams. And according to SilenX, it only takes ten minutes to install. So, we are guessing it is a pretty simple process. We will see.