Continue shopping “Pentair Purex SMBW 4000 Filter Vent Tube Cap 154578” has been added to your cart. Product Price Quantity Total × Pentair Purex SMBW 4000 Filter Vent Tube Cap 154578 $15.49 Pentair Purex SMBW 4000 Filter Vent Tube Cap 154578 quantity $15.49 Cart totals Subtotal $15.49 Total $15.49 Proceed to checkout — OR — Coupon: