Ouverture de conduit d'air linéaire linéaire 4 po x 10 po (ouverture totale 5-1 / 2 po x 11-3 / 4 po)

ORDERING CORRECT SIZE: Always measure the duct opening size to determine which size to purchase. The selected size fits your corresponding standard duct opening. To measure your duct opening for the correct vent, simply measure the width and length of the inside edges of the duct opening. The width and length of the opening should match the nominal size of the vent you order. Ensure your measurements are taken from edge to edge for an accurate fit. Do not measure the old vent cover, remove the old vent and measure the duct opening.