NAPAVS58KT-1 | Napoleon Attic Vent Sleeve Assembly | 5" x 8"570441264SKU:AVS58KT-1Inventory ID:03569294Select Item:Price: $109.00Quantity: Napoleon 10" ID telescopic to 20" vent pipe shield and cover for attic installations on 5" x 8" venting. Reviews Choose your rating12345