A data strip should be sized in three steps: confirm the insert height against the printed ticket, check that the strip profile matches the shelf edge, and select the material and length for the environment. The three workhorse insert heights are 26 mm, 39 mm, and 52 mm. Most ordering errors come from skipping the first step and buying a strip that is the wrong height for the ticket, or from buying a strip that fits the ticket but not the shelf.
Key Takeaways
- 26 mm, 39 mm, and 52 mm are the three standard insert heights; choose by ticket size, not by shelf width.
- A 39 mm strip will not hold a 26 mm ticket securely, and a 26 mm strip will not accept a 52 mm promotional card.
- Shelf edge profile determines mounting style: clip-on for C-channel and standard edges, self-adhesive for flat faces.
- Standard data strips do not grip wire shelving; wire requires a dedicated wire-rack holder.
- PVC is the standard material; PETG is the better choice for cold storage and impact resistance.
- Custom lengths reduce waste and eliminate gaps at the ends of a bay.
Standard Data Strip Sizes and What Each Insert Height Is For
26 mm, 39 mm, and 52 mm: The Three Workhorse Heights
Data strips are sized by insert height, the vertical opening that holds the printed card. 26 mm is the narrow profile, used for compact price tags and shelf-edge labels with minimal information. 39 mm is the middle size and the most common in retail, large enough for a price, a product name, and a scannable barcode. 52 mm is the tall profile, used for promotional cards, multi-line product information, or shelf talkers that carry more than a price.
The height is a fixed dimension, not a range. A strip designed for a 39 mm card has a window that matches that card. Putting a smaller card into a larger window leaves it loose and prone to sliding or falling out. Putting a larger card into a smaller window is not possible without trimming the card.
Matching Insert Height to Ticket Size and Barcode Depth
The ticket is the starting point. Measure the printed card’s height and confirm that the strip’s insert height matches it. For barcode scanning, the barcode needs to sit flat and unobstructed within the window. A strip that is too tall for the ticket can leave the barcode partially covered by the window edge, which causes scan failures at checkout.
For promotional shelf talkers, the insert height must accommodate the full card, not just the price line. A 52 mm strip is the usual choice when the card includes a product description, a rating, or a promotional message in addition to the price.
How to Check Data Strip Compatibility with Your Shelving
Shelf Edge Profile: Flat, C-Channel, and Angled
The shelf edge profile determines which strip will seat correctly. A flat shelf face accepts a self-adhesive strip or a flat-back clip-on strip. A C-channel edge has a recessed lip that grips a C-profile clip-on strip more securely than a simple flat clip. An angled shelf edge, common on lower shelves, pairs with an angled data strip that tilts the ticket toward the shopper.
Measure the vertical depth of the shelf edge before ordering. A strip that is too deep for the edge will protrude and catch on carts or stock. A strip that is too shallow will not seat fully and may fall off under load.
Clip-On vs. Self-Adhesive: Which Fits Your Shelf Type
A clip-on shelf label holder grips the shelf edge and leaves no residue. It is the right choice for standard metal gondolas, wood shelves, and any edge that can accept a clip. It can be repositioned when a planogram changes.
A self-adhesive label holder bonds to a flat surface with no edge to grip. It is the right choice for glass cases, cabinet fronts, and flat shelf faces. The trade-off is permanence: removing an adhesive strip may leave residue, so it is better suited to fixed locations than to shelves that are reconfigured often.
Wire Shelving and the Limits of Standard Data Strips
Wire shelving has no continuous flat edge, so a standard clip-on or self-adhesive data strip cannot attach to it. The gaps between wires prevent adhesive contact, and there is no lip for a clip. Wire racks require a wire-specific holder that clips onto the wire itself or hangs from the basket rim.
This is not a limitation of the data strip design. It is a mounting-surface mismatch. If the shelving is wire, confirm that the supplier offers a wire-rack label holder before ordering a standard data strip.
Data Strip Material and Length Selection
PVC vs. PETG: Clarity, Brittleness, and Cold Storage
PVC is the standard material for data strips. It is clear, tough, and resistant to yellowing under normal retail lighting. It works well in dry, room-temperature environments and is the most economical choice for high-volume orders.
PETG is the alternative for environments where PVC may become brittle. In cold storage, freezers, and high-impact areas, PETG retains clarity and impact resistance better than standard PVC. The cost is higher, but the service life in cold or harsh conditions is longer.
Roll vs. Pre-Cut Lengths for Bay Widths
Data strips are supplied in rolls or in pre-cut lengths. A roll allows on-site cutting to fit any bay, but the cut edge may be less clean and the remaining roll must be stored. Pre-cut lengths are specified to the bay width at the time of order, which eliminates waste and gives a finished edge at both ends.
For a single store with standard bays, pre-cut lengths are faster to install. For a distributor or a chain with variable bay widths, rolls offer flexibility. Custom lengths are also available for non-standard bays, which avoids gaps at the ends of a long shelf run.
FAQ
How do I measure my shelf edge for a data strip?
Measure the vertical depth of the shelf edge and the length of the bay. Confirm the insert height against the printed ticket: 26 mm, 39 mm, or 52 mm. A sample strip is the most reliable way to confirm fit before a bulk order.
Can I use a 39 mm strip with a 26 mm ticket?
You can insert a smaller ticket into a larger window, but it will not be held securely. The card can slide, tilt, or fall out, and the barcode may not sit flat for scanning. Use the strip height that matches the ticket.
Does IDmate supply custom-length data strips for non-standard bays?
Yes. IDmate supplies data strips in standard lengths, rolls, and custom lengths for non-standard bay widths. Custom colors and insert heights are also available for wholesale orders. MOQ and lead time depend on the specific profile and customization.
