Green Drain GD103 3-Inch Waterless Drain Trap Seal

The Green Drain GD103 is a 3-inch waterless floor trap seal engineered to block sewer gases, insects, odors, and harmful biologic aerosols from entering occupied spaces through inactive floor drains. Built with a UV-resistant ABS plastic frame and a silicone rubber sealing flapper featuring four flexible sealing ribs, it installs with a simple press-fit requiring no tools or water to function. The integrated one-way valve handles up to 34 GPM without impeding drainage flow or routine plumbing maintenance, while also providing sewage backflow protection. Suited for commercial kitchens, mop sinks, shower drains, HVAC condensation lines, and basement floors, the GD103 is a green technology solution that supports LEED certification goals and improves indoor air quality.