Cart “Flat Vent Filter” has been added to your cart. Continue shopping Remove item Thumbnail image Product Price Quantity Subtotal × Flat Vent Filter $5.99 Flat Vent Filter quantity $17.97 × Inlet Filter, 5L Oxygen Concentrator (Set of 12) $89.99 Inlet Filter, 5L Oxygen Concentrator (Set of 12) quantity $89.99 Update cart Go To Checkout ► Cart totals Subtotal $107.96 Total $107.96 Go To Checkout ►