Steel wire I used for guying large trees. Many uses for landscaping and arborists. I am guessing at the 16 gauge description, the measurements are decimal 1.07", 2.73mm, about 7/64".
20" x 16" RETURN FILTER GRILLE - Easy Air FLow - Flat Stamped Face 20w" x 16h" opening (vent hole) dimension - actual size is approx 2" wider. You may think of grilles and registers as a generic component of the ventilation system in your house. But they are also the most visible representation of you air system.
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