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Feb 26, 2026 - 01:13 PM
We’ve provided several answers to questions related to Shiley 4CFN Cuffless Fenestrated Tube Size 4, 5 mm ID (Each) , see some other helpful Q&A related to this product.
Question: What does "4CFN" stand for in this tube?
Answer: "4CFN" indicates a Size 4 Cuffless Fenestrated tube. The code helps to quickly identify the key features—size, cuffless design, and fenestrations—so clinicians can select the appropriate tube for patient needs.
Question: What is the size of the tube?
Answer: The tube is a Size 4. In tracheostomy tubes, the size indicates the overall dimensions and fit for the patient; Size 4 is generally used for smaller adults or pediatric patients, making it a good choice for those with narrower airways.
Question: What is the inner diameter of the tube?
Answer: The inner diameter (ID) of the tube is 5 mm. The inner diameter refers to the measurement across the inside of the tube, which affects airflow and suitability for different patient needs; a 5 mm ID is typically used for patients requiring a smaller airway.
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