3 Layer Heavy Duty Silicone Coupler. x8 3" Straight silicone coupler. x4 3" 90 Degree silicone coupler. Piping Spec x2 3" (OD) Straight aluminum pipe. x4 3" (OD) 90 Degree short aluminum pipe. x6 3" (OD) 90 Degree long aluminum pipe.
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