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This product features a 6 inch corrugated external snap coupling. It weighs 0.28 lbs. And has the dimensions of 5.6 L x 7.4 W x 7.4 h in. It is definitely a great quality product. Will not connect to other FLEX-Drain accessories except the female end of the FLEX-Drain pipe. Exceeds all applicable ASTM Standards. Compatible with most traditional 3 in. and 4 in. corrugated pipe and 4 in PVC ;The FLEX-Drain system has a 30-Percent higher load-bearing rating than standard corrugated pipe.