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Perko Extra Long Thru Hulls
Cast bronze. Similar to 322 series except neck is threaded to between 1 and 1-1/2" from flange. Available in 2 sizes
3/4" thread, 1 7/8" Flange, 5 1/4" Max hull thickness
1" thread, 2 1/4" Flange, 5 3/16" Max hull thickness.
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