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Ships within 48 hours · Estimated delivery Jul 27 - Aug 1
Easy Installation: The actual outside dimensions of 13
• Heavy-Duty Steel Construction: Built from high-quality steel with a durable powder-coated finish for long-lasting performance and corrosion resistance
it refers to the size of the "tongue" so that it will fit in a 8"x8" hole
actual outside dimension is 16
Stamped Face Steel Construction with 1/2" fin spacing for high air flow
14"w x 20"h (Duct opening size) steel filter return grille with removable door for 1-inch filter replacement - Overall dimensions: 16.6"w X 22.6"h Easy Installation: The actual outsideThe Listed size 14"x20" is for inside duct opening measurement, actual outside dimension is 16. 6"x22. 6" Stamped Face Steel Construction with 1 2" fin spacing for high air flow Screws are included for easy installation White Powder coating with matte finish Individually packed with card board box for ultra protection Size Selection Guide Measure the size of the air duct opening(the size of the hole ). Select the listed size that match the duct