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3/8" Through-Wall Coupling

McMaster

51055K3

$3.95

Silicone O-Ring AS568A Dash Number 211

McMaster

9396K32

$0.15

3/8" Acetal Shut-Off Valve

United States Plastic Corporation®

58357

$12.50

1/4"ID UV-Resistant Black PVC Tubing

McMaster

5231K83

$0.22/ft