14"x10" Stamped Face Steel Return Grille Vent Cover White Poweder Coating Without Frame Outside Dimension 15.75"x11.75" The listed size 10" x

The listed size 10" x 8" is for the inside duct opening measurement

The flexible connector features a heavy-duty corrugated 304 stainless steel tube protected by a durable stainless steel braid and exterior coating for superior flexibility

1/2" ID for high water flow

This product has listed size 14“w X 8”h is for duct opening measurement only

NSF/ANSI 61

14"x10" Stamped Face Steel Return Grille Vent Cover White Poweder Coating Without Frame Outside Dimension 15.75"x11.75" The listed size 10" xThe Listed size 14"x10" is for inside duct opening measurement, actual outside dimension is 15. 75"x11. 75" 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