138mm Large Size Floor Drain Core – Universal Cut-to-Fit Sewer Cover – Anti-Odor & Insect-Proof Bathroom Drainage Core – Quick Flow Backflow Preventer (Black/Gray)

Solve drainage issues in large or non-standard floor drains with our 138mm Universal Floor Drain Core. Engineered for high-volume water areas, this large-scale core features a unique trimmable design, allowing you to cut the outer ring to the exact diameter of your drain for a perfect, custom fit. The intelligent gravity-induction valve opens fully for rapid drainage and snaps shut instantly when water stops, creating an airtight seal that blocks sewer gases, foul odors, and crawling insects like cockroaches. Available in sleek Black or modern Gray, it provides a professional, integrated look for any bathroom, laundry room, or basement renovation.

Color Specification Guide:

Key Features:

• Cut-to-Fit Versatility: The outer sealing ring features concentric "cut lines." Simply use heavy-duty scissors or a utility knife to trim the core down to your specific drain size (61 {mm} – 138 {mm}), ensuring a 100% airtight seal.
• Large Displacement Drainage: Designed for "flood-prone" areas. The oversized opening ensures that water clears instantly, preventing puddles during high-flow showers or machine drainage.
• Dual Protection Shield: The weighted or magnetic self-closing valve blocks odors from the sewer and prevents insects (drain flies, roaches) from entering your living space.
• Tool-Free Installation: No plumbing experience required. Just trim, press into the drain pipe, and it’s ready. It can be easily removed at any time for cleaning.\
• High-Strength Sealing: The flexible rubber/silicone edges adapt to slight irregularities in the pipe wall, maintaining a vacuum-like seal against backflow and stinky air.

Specifications:

• Material: High-Strength ABS / Industrial Grade Rubber + Brass Core (Model Dependent)
• Maximum Diameter:138 mm
• Adjustable Range: Can be cut/trimmed to fit installation sizes from 61mm up to 138mm
• Function: Anti-Odor, Anti-Insect, Anti-Backflow, Rapid Drainage
• Installation: Tool-free "Press-in" design
• Temperature Resistance: Suitable for both hot and cold water drainage