Watts LF800M4-FR-FZ 1 - Part of the LF800M4FR Series Tactile Paving It is certified to NSF

It is certified to NSF and ANSI standards

it ensures consistent and reliable installation

Measuring 4″ wide by 40″ long with an 8″ invert

Also known as a drain cover

Watts LF800M4-FR-FZ 1 - Part of the LF800M4FR Series Tactile Paving It is certified to NSFThis 1 inch lead free pressure vacuum breaker backflow preventer prevents the reverse flow of polluted water from entering into the potable water supply due to backsiphonage. It consists of a lead free cast copper silicon alloy body construction, silicone rubber check valve disc, plastic check valve seat, stainless steel springs, a bonnet with silicone rubber O ring seal, a lightweight plastic disc float, tee handle shutoff, and test cocks for