To add to Gary T’s analogy to long underwear, having a door that could convert to weather-proofing in winter vs screen ventilation in summer was a boon before easy air-conditioning of houses. Now, not so important.
To add to Gary T’s analogy to long underwear, having a door that could convert to weather-proofing in winter vs screen ventilation in summer was a boon before easy air-conditioning of houses. Now, not so important.