The with or without OSD is a reliable, durable, lightweight concentrator with long life components and pleasant aesthetic features.

Manufacturer:  Sunrise DeVilbiss

DeVilbiss® has taken the world's most reliable pressure-vacuum system and downsized it into the lightest, most compact and easy to transport three-liter concentrator available with or without OSD.

Manufacturer:  Sunrise DeVilbiss

The is designed to be reliable and easy to move around due to its lightweight. Additionally, the Millennium is extremely quiet. With 60% fewer parts, this concentrator is simple to service, and requires less maintenance over its lifetime.

Manufacturer:  Respironics