By Waterway
Part # 4744-037
Manufacturer Code 550-7100
Alternate Part #'s 550-7100, 5507100, 14-270-1083, WW5507100
can you tell me the difference between the 12 square foot and the 18 square foot base assembly part numbers 550-7100 and 550-7120
Thanks for your help
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The 12 Sq. Ft. measures 12" Long where the 18 Sq. Ft. measures 22" long.
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