Walk through almost any grocery store deli, bakery, or bulk aisle and you’ll see a stack of thin bags hanging from a hook, each one tearing off neatly as a shopper or employee pulls it. Those are block header bags, and they’re one of the simplest ways to keep bags tidy, easy to grab, and off the counter.
This guide explains what they are, how they work, where stores use them, how plastic and paper headers differ, and how they compare with bags on a roll and T-shirt bags so you can choose the right format for each station.
Block header bags hang on a hook and tear off one at a time.
What Are Block Header Bags?
A block header bag is a flat bag (usually thin HDPE) that is manufactured in a stack, or “block,” held together at the top by a reinforced header strip. The header has punched holes so the whole pack hangs on wall hooks, peg bars, or a dispenser rack. Each bag is perforated just below the header, so pulling one bag tears it free while the rest of the block stays hanging.
Think of it like a notepad: the header is the binding, and each bag is a page you tear off.
How the header works
- Hanging holes let you mount the block on hooks at the counter or on a stand.
- The reinforced strip keeps the bags aligned so they don’t slide or tangle.
- A perforation line under the header lets each bag release cleanly, with its mouth ready to open.
Plastic Header vs Paper Header
These bags come with two main header styles. The bag itself is the same; the difference is the strip that holds the block together.
| Feature | Plastic block header | Paper block header |
|---|---|---|
| Header material | Plastic strip | Paper/cardboard strip |
| Feel | Flexible | Stiffer |
| Around moisture | Better suited to damp areas | Best kept dry |
| Good fit for | Produce, seafood, deli | Bakery, bulk foods, dry goods |
Both styles hang the same way. If a station gets wet (misted produce, ice beds, sinks nearby), a plastic header is usually the more practical pick. For dry areas, either works; it comes down to preference and what fits your fixtures.
We carry both in the same bag size:
- HDPE block header bag with plastic header: 12 x 18 in, 15 mic.
- HDPE block header bag with paper header: 12 x 18 in, 15 mic.
Bags with a plastic header hang on hooks and tear off one at a time.
How Stores Use Block Header Bags
Because they hang at hand height and release one bag at a time, header bags suit busy counters where staff need speed and customers need easy self-service.
- Produce departments: mounted on posts or the ends of displays for loose fruit and vegetables.
- Deli and prepared foods: staff grab a bag with one hand while holding a wrapped item in the other.
- Bakeries: for rolls, bagels, and cookies at self-serve cases.
- Bulk foods: next to bins of nuts, grains, and candy.
- Hardware and parts counters: for screws, bolts, fittings, and small components sold by count.
- Pharmacy and convenience counters: quick bagging for small items at checkout.
At 12 x 18 in, our header bags are a comfortable all-round size: roomy enough for a bunch of apples or a dozen bagels, but not so large that they waste film on small items.
Block Header Bags vs Bags on a Roll
Bags on a roll are the other common choice for produce and bulk areas. Each has its place.
- Mounting: header bags hang on simple hooks; rolls need a roll holder or dispenser.
- Counts: a roll often holds hundreds of bags, so it needs restocking less often. For example, our 12 x 20 in HDPE bags on roll come 810 per roll.
- Opening: header bags tear off with the mouth at the top, ready to open. Roll bags peel off in sequence and may take a quick rub to open.
- Look: header blocks stay flat and neat at eye level, which works well on a service counter.
Our guide to HDPE and LDPE roll bags goes deeper on roll formats, and our HDPE bags category shows every roll size we stock.
Parts counters use header bags for small items sold by count.
Header Bags vs T-Shirt Bags and Flat Produce Bags
T-shirt bags have handles and are designed for carrying a full checkout order. Header bags have no handles and are meant for grouping loose items inside the store before checkout. Many stores use both: header or roll bags in the aisles, T-shirt bags at the register. See our T-shirt bag size guide to match checkout bags to your lanes.
If you prefer loose flat bags stacked in a box, our clear HDPE produce bags (12 x 17 in, 15 mic, 1,000 per case) are another option for back-of-house or low-traffic areas.
Tips for Choosing and Setting Up Header Bags
- Match the header to the station. Plastic for damp areas, either style for dry areas.
- Check your hooks. Make sure the hook spacing and size on your fixture fit the header holes before ordering in volume.
- Mount at a comfortable height. Customers should be able to reach the bags without stretching over displays.
- Keep a spare block nearby. Swapping a new block takes seconds, so stock one under the counter.
- Think about thickness. At 15 mic, HDPE is light but strong for its weight. For heavier or sharp items, consider thicker bags. Our plastic thickness guide explains microns and mils.
- Keep bags away from young children. Mount blocks high enough that toddlers can’t pull them down.
Frequently Asked Questions
What is the difference between a header bag and a regular flat bag?
A header bag is attached to a reinforced strip with hanging holes and a perforation, so it hangs and tears off one at a time. A regular flat bag is loose and usually stacked in a box.
What size are your block header bags?
Ours are HDPE, 12 x 18 in, 15 mic, available with a plastic header or a paper header.
Can header bags be used outside grocery stores?
Yes. Hardware stores, parts counters, pharmacies, and convenience stores use them wherever staff or customers need to bag small items quickly.
Setting up a new counter or restocking your stores? Browse our plastic bags or request a quote for wholesale quantities.
