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The TIGRE USA INC 36-6595 is a downspout adapter designed to transition 2 inch by 3 inch rectangular rain gutter downspouts into 3 inch underground sewer pipe. This fitting bridges the gap between standard residential rectangular downspout outlets and the buried drainage system below grade, allowing water to exit the downspout and enter the underground line cleanly. It is a common component in residential and light commercial gutter drainage installations and is typically installed by plumbers, drainage contractors, or experienced general contractors working on site stormwater management.
This adapter is used wherever a 2 inch by 3 inch rectangular downspout terminates at grade and needs to connect to a 3 inch underground sewer or stormwater pipe. Typical applications include residential homes with standard K-style gutters that discharge to perimeter French drains, municipal storm connections, or dry wells. The fitting handles the geometry change from a flat rectangular profile to a round pipe cross-section in a single piece, eliminating the need for fabricated transitions.
Designed as an OEM-style replacement and new-installation fitting for 2 inch by 3 inch rectangular rain gutter downspouts connecting to 3 inch underground sewer or stormwater pipe systems.
Installation is typically performed by a plumber or drainage contractor. Ensure the underground pipe is properly bedded and sloped to drain before connecting this adapter at the top of the run. Follow local plumbing and stormwater codes for approved materials and burial depths. Confirm the underground pipe diameter is 3 inches nominal before fitting to avoid misalignment at the joint.
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