100% APPROPRIATE FOR CPAP MACHINE 2Quick install and easy to use Recommend 6 Month Replacement:It is advised to replace the filter and valve every 6 months. Universal Compatibility: Filter Replacement Kit is using an exquisite design, perfectly compatible with SC1200 and SC2 machines, featuring the same effect as the original. Convenient to Install: CPAP Filter Kit is used to replace old or broken filters, is easy to install without additional tools, and without risk of leakage. Easy Carrying: CPAP Machine Filters are no need to specially prepare a storage bag for them, small, exquisite, lightweight, and easy to carry out at any time. Material: Plastic colour: grey Package Contents: 8 x Filter Elements 8 x Check Valve Assembly Only the above package content, other products are not included. Note: Light reflection and different displays may cause the color of the item in the picture a little different from the real thing. The measurement allowed error is +/- 1-3cm. Product Notes: Please allow a little manual errors.Due to the lighting of the photos and the difference of monitors, the pictures may not reflect the actual color of the real item. Please confirm acceptance before ordering. About Shipping: Please ensure your shipping informations are correct to avoid delivery issues. All orders are shipped within 3 days after payment. Delivery usually takes 8–12 days, The specific delivery time is depend on circumstances. If you have any questions during your purchase, feel free to contact us. We will respond you within 24 hours.