Patented Model R with Magnetic Attachment By Gayle Posted January 3, 2022 In 1 0 The PreVent® Model R with Magnetic Attachment is patented. Recent PostsSeeds of Discontent: How Cottonwood Influences Air Quality in Rural AreasBehind Closed Doors: Urban Air Quality’s Impact on Indoor AirHow Permatron Helps Keep Data Centers Running SmoothlyLet’s Demystify Mist Eliminators. Here’s Why You Need Them.