Details about 10PCS PM2.5 Face Mask Anti Dust Fold Flat Valved Asbestos Respirator Disposaxkj. 10x PM2.5 KN95 Face Mask Dust Roof Mouth Face Respirator Protection Masks. $29.99. We only ship to the confirmed address provided by PayPal. Before you pay, please make sure your address in PayPal matches the address you would like us to ship to.