Compact, clear, 4-chamber chest drainage unit. Needle-free ports for collection chamber and water seal chamber. Latex-free patient tube and components. Precision suction regulator. Blue-colored Patient Assessment Manometer monitors actual negative intrathoracic pressure. Automatic positive pressure relief valve. Manual negative pressure relief valve. Pediatric and adult collection chamber graduations identify drainage volume. Large water seal fill spout. Easy-to-read graphics. Set-up instructions printed on unit. Wide, rotational floorstand and hangers. Sterile.