What is a four seasons room? As its name suggests, a four seasons room is essentially a convertible room; 3 walls of large windows and screen doors to let summer air flow through, that can also be sealed shut to retain heat during our cold Connecticut winters. A fun and attractive addition to any home, a four seasons room will prove a popular room for lounging and relaxing in , as well as for entertaining and mingling in. M&M Constructions is delighted to install one of these architectural beauties in any home to your specifications.