The DD and the DDXH Series come standard with a Galvanized Carbon Steel housing and a bronze strainer. 
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Item #

Pipe Size: A

Dim: B

Dim: C

Dim: D

Open Area Ratio

Weight

2-DD21 N/A 2 in N/A 3.75 in N/A 5.5 in N/A 4.88 in N/A 2:5:1 N/A 6 lb
3-DD21 N/A 3 in N/A 3.75 in N/A 6.5 in N/A 5.88 in N/A 2:1 N/A 8 lb
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