Fluidmaster 6000 Series AirGap Bottom Entry Height Adjustable Non Delay Fill Valve Brass Shank NEWLY IMPORTED which meet the exacting demands which meet the exacting demands of the insurance companies and the police 1000 key variations High security levels are delivered by a 20mm bolt throw on every lock All locks have hardened steel plates to resist drilling False notching in levers resist lock picking Interior & Exterior Material: Steel & Zinc Alloy Fixings included 10 year guarantee and warranty 2500 square feet Product includes a night light Safe near children BS1212 Compliant 1 2" Heavy Duty Brass Shank Bottom Entry Unique Fluidmaster AirGap Technology Totally Eliminates Backflow Fast Fit Height Adjustment installs to water levels between 140mm 240mm Spiral Vortex Generator for Fast & Quiet Cistern Refill For High & Low Water Pressure