The vertical hyperbaric chambers are not for laying down. Theses are becoming the chamber of choice for those who are using their hyperbaric chamber for EWOT (exercise with oxygen therapy) and those who want to exercise or sit and read or do work in their chamber that need to sit up.
The smallest vertical dive chamber is 40 inches in diameter while the largest Grand Dive Vertical is 60 inches. Two adults can fit in the larger vertical dive. The latest Grand Vertical Dive is 6 foot tall and about 5 foot wide.
For those with mobility issues or who can't get in and out of a horizontal chamber this can make it much easier to self administer the sessions. With the larger vertical chamber, some people put a massage chair in it (make sure you have an electricity port before you get it delivered because to not void the warranty the manufacturer MUST add the electricity port or the warranty won't be valid. If someone decides to get the electricity port added later they have to ship their chamber back and pay double shipping.
Many people do a full workout. I use a non toxic inflatable workout ball. I do nearly my entire upper body workout on this and also use it for lymph drainage. Make sure its latex or you might end up with one that gives off VOC emissions. I try to avoid off gassing at all expenses.
The vertical dive chambers go up to 1.3 ATA and now has 2 ports for the cooler pump. The chamber is very large so I recommend not only using the air compressors in parallel but also syncing them in serial.
The older dive chambers only had one air intake valve so syncing 2 compressors in serial was the only way. The chamber doesn't get as muggy and humid as it used to and there is so much more air flow.