Home Store Equipment Chemicals Accessories and Supplies Shop by Brand Safety and PPE Parts Education Clearance Shop by Brand My Account Shopping Cart Contact Us About Us +3 Aprilaire Crawlspace Dehumidifier Backflow Damper 5450, Fits E100/E130 AA-5450 $12.50 In stock Quantity: 1 Add to Bag Product Details MPN: 5450 Brand: Aprilaire Aprilaire Crawlspace Dehumidifier Backflow Damper 5450, Fits E100/E130 Save this product for later Favorite