###### Asked in Heating Ventilating and Air ConditioningMath and ArithmeticAlgebraPrime Numbers

Heating Ventilating and Air Conditioning

Math and Arithmetic

Algebra

Prime Numbers

# Is the first number the width on a floor register?

## Answer

###### Wiki User

###### November 09, 2007 4:23AM

Yes - in the US we use an industry standard called the modular system which places all dimensions of building products in the same order - width, height, depth.

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