These 1/2 x 3" black C-channel cardholders attach to ferrous metal surfaces using .060" thick magnetic backing — no adhesives, no hardware, and no surface residue. The channel opening accepts standard rack label cards, and white paper inserts are included with each unit so facilities can begin labeling immediately.

Designed for bin labeling, slot identification, and location signage, these cardholders are used throughout warehouse, distribution, manufacturing, and office storage environments. The magnetic mount allows holders to be repositioned whenever rack layouts or inventory assignments change, without leaving marks or requiring surface prep.

Each cardholder measures 1/2" x 3" at the channel opening and is constructed from .060" thick magnetic sheet stock. Cases contain 25 units and ship via parcel carrier.