The DD and the DDXH Series come standard with a Galvanized Carbon Steel housing and a bronze strainer. 
The DDXH Series has a trap/baffle strainer to create a liquid seal for use in any area that odor is an issue.
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Item #

Pipe Size: A

Dim: B

Dim: C

Dim: D

Open Area Ratio

Weight

N/A 1.5 in N/A 3.88 in N/A 4.88 in N/A 4.13 in N/A 3:1 N/A 7 lb
N/A 2 in N/A 4 in N/A 5.75 in N/A 5.13 in N/A 3:1 N/A 9 lb
N/A 2.5 in N/A 4.25 in N/A 6.88 in N/A 6.25 in N/A 2:5:1 N/A 13 lb
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