System Features Molded 2-1/2 Inch to 3 Inch hose adapter.Dimensions shown are from the outside of the part and may vary. When measuring your louver and looking for a hose adapter also consider the thickness of the plastic which can be approximately 0.08 +/- .030 thick.The depth of the hose adapters are between 1/2 to 3/4"." Vehicle Fitment warning California Proposition 65 arrow_drop_down WARNING: California proposition 65
