The Vanishing Series 70-RT features a unique 3-way driver array that produces big, full-range performance from a deceptively small in-ceiling speaker. Patented bass venting design smoothly transitions air flow, eliminating turbulence and distortion, for deeper, more efficient bass impact. The unique, wafer-thin grille that can be painted to match the decor is magnetically secured to deliver nearly transparent, ultra-small perfs and dynamic, unimpeded sound. The vanishing series speakers are compatible with Polk Audio RTi speakers for seamless blending between traditional and built-in speaker systems. Perfect Fit templates, a precision flange, (available) pre-construction brackets and the patented Rotating Cam system ensure secure, vibration-free installation.