The Raceway System Designed to Give You an Extra HAND Wire Hider Non-Metallic Surface Mount Raceway was designed with the Installation Professional in mind. Have you ever laid cable into a raceway only to have it fall out as you attempt to close the cover, especially on ceiling runs? Wire Hider was designed to eliminate this problem and speed up installation - which saves you TIME and MONEY! LABOR SAVING Flexible vinyl flaps on base channel "traps" wire, making installation a one person job.