Challengair Portable Dryer Filter SKU DBL2027 An internal error has occurred $5.85 Quantity discounts available QuantityPrice This item is temporarily out of stock and not eligible for backorder. Get Notified When Available We'll send you an email when Challengair Portable Dryer Filter is back in stock or available for preorder. First Name Last Name Email Address (required)Subscribe to marketing emails. Get notified Quantity -+ Add to Cart Check Out Safely Details ChallengAir Portable Dryer Filter. Details Back DetailsChallengAir Portable Dryer Filter.