Suggested Retail: $46.95. Steinberg14 Brown 18x18 inch Return Air Grille Vent Cover with Bug Screen - Steel Wall Duct Cover for Indoor Outdoor. This galvanized steel wall duct cover is suitable for duct openings inside or outside the house. It is ideal for any home design and works well for AC systems. The vent cover is corrosion resistant and can handle the necessary changing conditions to keep a house at the required temperature. It functions as a ceiling air vent cover when needed and is a practical choice with high durability and professional finishes. The vent cover comes with a mesh insect screen that is rated for mosquitos. It uses high-quality galvanized steel and paint and has a modern, code-compliant design. 19.68 x 19.68 x 0 IN. DIMENSIONS ARE ESTIMATED. Brand: Steinberg14. Model: MR5050B ST L. Lot Sticker: OH001-00000448-44. 7 CALENDAR DAY FULL REFUND GUARANTEE (FROM PRIMARY PICKUP DATE) ON THIS ITEM IF ANY ISSUE IS FOUND THAT WAS NOT DESCRIBED/PICTURED. 7 CALENDAR DAY STORAGE (FROM PRIMARY PICKUP DATE) IS ALSO AVAILABLE. THE PRIMARY PICKUP DATE IS THE DAY AFTER THE AUCTION ENDS. SEE NOTES TO BIDDER, IN AUCTION DETAILS, AT THE TOP OF PAGE 1 FOR MORE INFO.