4-Cylinder Non-Digital Portable Manifold
Accutron 44000 4-Cylinder Non-Digital Portable Flowmeter Manifold

Portable manifold that accommodates 4 gas cylinders - 2 oxygen and 2 nitrous oxide (non-digital and without flowmeter)

Portable self-contained manifold unit that can be moved from operatory to operatory. Ideal if nitrous oxide is infrequently used. 

H x W x D (with cylinders mounted and without flowmeter): telescopes 20-3/8"-30-7/8"