Suction Catheters Soft, strong PVC suction catheters available in coiled or straight style. Beveled whistle tip and offset eyes to promote maximum evacuation and help reduce mucosal trauma. All catheters have control vent. Adult sizes (12 Fr, 14 Fr, 16 Fr and 18 Fr) are 22in. long. Pediatric sizes (6 Fr, 8 Fr and 10 Fr) are 16in. long and graduated for measuring proper depth insertion. 50/cs.