Oxygen Mask 80 Pack – Adult Medium Concentration Bulk pack of 80 adult masks. £396.00 Oxygen Mask 80 Pack - Adult Medium Concentration quantity Add to basket Description Bulk pack of 80 adult, medium concentration masks. You might also like Oxygen Mask Child Medium Concentration £5.50 Add to basket Oxygen Cannula Mask Adult £8.95 Add to basket Oxygen Mask 40 Pack – Adult Medium Concentration £198.00 Add to basket