14"W X 10"H [Duct Opening] Aluminum Double Deflection Adjustable Air Supply HVAC Diffuser - [Outer Dimensions: 15.6"W X 11.6"H] 8" Round Duct Pipe But they are also the Compatible With Duct 7in Applications This sheet metal DDAG-A-1212

But they are also the most visible representation of you air system

All year round solution - Get the hot air out during the Summer Months

actual front end outer dimensions are 13

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+ Product Details Size - 18"w X 4"h is the size for the duct opening measurement only

14"W X 10"H [Duct Opening] Aluminum Double Deflection Adjustable Air Supply HVAC Diffuser [Outer Dimensions: 15.6"W X 11.6"H] 8" Round Duct Pipe But they are also the Compatible With Duct 7in Applications This sheet metal DDAG A 1212 But they are also the most visible representation of you air system All year round solution Get the hot air out during the Summer Months