How Many Gondola Sections Do You Need? A Planning Formula

To find how many gondola sections you need, work from the floor up: measure usable wall length and island space, divide by your section length, then check the result against how much product you actually have to display. Space tells you the maximum. Inventory tells you the sensible number. Order the lower of the two, then leave room to grow.

The two-limit method

Every layout has two limits. The first is physical: how many sections fit in your wall and floor space while leaving room to walk. The second is commercial: how many sections your inventory and sales volume justify. Many new stores order to the physical limit and end up with sparse, underfilled shelves. Others order to a guess of inventory and run out of room. Calculating both gives you a range.

Step 1: Calculate the physical limit

1. Measure usable wall length for each wall. See how to measure your store.
2. Divide by section length (commonly 4 feet; confirm the real figure) and round down.
3. Add up the wall sections.
4. Calculate island space. Subtract wall unit depth on each side and aisle widths from the room width. What is left holds islands.
5. Count island sections the same way, remembering islands are double-sided.

A worked example: a room is 40 feet by 25 feet. The back wall is 40 feet, two side walls are 25 feet each, and the front has a 10-foot entrance and a counter along 12 feet. Usable wall length is about 40 + 25 + 25 = 90 feet, so 22 full 4-foot sections along the walls, with a bit left over. For islands, suppose the center has room for two runs of 6 sections each, leaving aisles of about 4 feet. The physical maximum is 22 wall sections and 12 island sections, or 34 in total. That is the ceiling, not the target.

Step 2: Calculate the commercial limit

Estimate how much product you have to display. A simple approach is to count your SKUs, decide how many facings each deserves and divide by the facings one section holds. A section with five shelves and facings every few inches may hold dozens of facings, but the real number depends on product size.

These numbers are illustrations, not benchmarks. Substitute your own product counts. If your answer is far above the physical limit, you need taller units, more depth or fewer SKUs. If it is far below, you are over-planning space and can use more floor for aisles and displays.

Step 3: Reconcile

Compare the two numbers. If your commercial need is 30 and your physical limit is 34, you have room and can leave breathing space. If your need is 45 and your limit is 34, something has to give. You can go taller, add pegboard backs for hanging items, add end cap displays, trim your assortment or accept a larger footprint.

Step 4: Convert to an order

Turn the final number into starters and add-ons. Each run needs one starter. If you have a 22-section wall plan split into three runs, you need three starters and 19 add-ons. See starter vs. add-on units. Then count shelves per section, usually fixed by height, and add accessories such as dividers or price tag holders.

Rules of thumb

• Keep main aisles comfortably wide. Cramped aisles reduce sales, and they may also violate accessibility rules. See aisle width guidelines.
• Start with fewer sections and fill them well. A full shelf sells better than a bare one.
• Plan for 10 to 20 percent growth in your assortment if you expect to add products soon.
• Use end caps for promotions rather than adding more run length. See endcap merchandising ideas.

When product volume is uncertain

If you are opening a new store and do not know your volume, start with walls only. Walls give you the most shelf face for the least floor use, and you can add islands later once you learn what sells. The same logic applies to a startup budget. See startup retail fixture budget.

Common mistakes

• Ordering to the physical limit and leaving shelves half empty.
• Ordering by square footage alone and ignoring product volume.
• Forgetting that each run needs a starter.
• Letting islands eat the aisles.
• Not leaving space for a future expansion.

Frequently asked questions

How many shelves per section?

It depends on height and your product sizes. Taller units hold more shelves, and shelves can be repositioned. See how to adjust shelf heights.

Should I order extra sections?

Order what your plan needs, plus a few spare shelves and parts. Extra full sections are worth buying only if you expect to use them soon.

Can you check my numbers?

Yes. Call (609) 635-3005 or use the contact page.

Start building your list

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