The Green Drain GD6 Siphon Membrane Odor Barrier is a dry siphon system for floor drains with dimensions of 148-155 mm. The product features a UV-resistant ABS plastic frame, a durable silicone rubber sealing flap, and four flexible sealing ribs that ensure reliable installation in various drain opening sizes. Certified to ASSE 1072 standards and listed with IAPMO and I.C.C., this odor barrier effectively prevents the ingress of sewer gases, radon gases, insects, and harmful pathogens through floor drains into buildings. The flexible silicone membrane allows for free water flow during drainage and automatically seals once the water flow stops, creating an effective barrier against odors and pests. This waterless system works efficiently in both horizontal and vertical installations and is suitable for new construction projects as well as retrofits where traditional siphons have never been installed. The self-cleaning design prevents the accumulation of debris, hair, and grease that often clog conventional siphons. Applications include factories, schools, office buildings, hospitals, restaurants, public facilities, hotels, technical rooms, industrial spaces, vacation homes, and seasonal buildings. Installation requires no tools – simply remove the drain grate and push the unit into the pipe opening. The product has received multiple international certifications, including European Technical Assessment, CSA standards, and various national plumbing approvals.