All relief vents are sized based on their specific use and determined by using a codebook,but cannot be less than __________ the diameter of the drain they serve,and no smaller than __________".

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The Answer of All relief vents are sized based on their specific use and determined by using a codebook,but cannot be less than __________ the diameter of the drain they serve,and no smaller than __________".

All Relief Vents Are Sized Based on Their Specific Use