Features: * Eliminates roof penetrations * Multiple use applications * Code allowed, easy to install, and durable * Double guide system and positive seal * Lightweight membrane and quiet operation * Insect and tamper resistant * Micro size has a 1-1/2 in. female threaded connection; however, the valve is rated for 1-1/4 in. to 2 in. individual or branch vent pipes * Use with Magic Trap PVC-DWV fitting What"s In The Box: * Rectorseal 97400 Magic Vent Micro Air Admittance Valve