Our drain is clay 6 inches total diameter - I think the internal is 5 1/2 inches. Will this this 150 mm fit? Many thanks

Hi If the pipe itself is 6" then this should fit with no problem

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🚫🐀 Seal your drains, secure your space—rat-free guaranteed!

CERTIFIED PEACE OF MIND - WRC & VA approved—trusted by UK and Danish water authorities
UNMATCHED DOUBLE BARRIER - Two serrated flaps create a rat-proof fortress in your drains
PROVEN GLOBAL PERFORMANCE - Over 250,000 units installed worldwide, protecting 1 in 6 Danish homes
VERSATILE EASY INSTALLATION - Reversible valve design fits both inlet and outlet pipes with frictionless sliding
BUILT TO LAST IN HARSH ENVIRONMENTS - Crafted from marine grade acid-resistant stainless steel for industrial durability

The Metex Nordisk 150mm Rat Blocker is a professional-grade, marine stainless steel valve featuring dual serrated flaps and a reversible one-way design. Certified by UK and Danish water authorities, it prevents rat ingress through drainage systems while allowing waste flow. Proven in over 250,000 installations globally, it offers durable, easy-to-install protection for both domestic and commercial properties.

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Package Dimensions	26.4 x 22.1 x 17.4 cm; 1.74 kg
Part number	RAT92018
Material type	Cast Iron, Plastic, Stainless Steel
Manufacturer	Nordisk
Item model number	RAT92018
ASIN	B07G5FHTWP

Metex - Nordisk 150mm Rat Blocker. Made From Marine Grade Acid Resistant Stainless Steel With A One Way Valve & Two Serrated Flaps For Double Protection. Easy To Install Industrial Rat Valve.

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