Shelf depth is the least glamorous decision you will make when spec-ing a gondola run, and the one that costs the most to fix later. Get it wrong and either your product hangs off the front (dangerous, ugly, blocks sightlines) or your shelf eats floor space you needed for an aisle. Get it right and the fixture disappears behind the merchandise, which is what a shelf is supposed to do. Here is how the common Lozier deck depths map to real merchandising categories, and how to pick correctly on the first order.
The Lozier Depth Range
Lozier's SD Standard Deck is offered in 13", 16", 19", 22", 25", 28", and 31" depths [cite: Lozier Catalog PDF, IS Section spec, item 4]. One important caveat: on Heavy Duty (HD) sections, the 13" deck is not available. HD base decks start at 16" [cite: Lozier Catalog PDF, IS Section spec, item 4: "13" not available on HD"]. In our experience, most retail projects land on one of the middle four depths (13", 16", 19", or 22"), with 25" and up reserved for specialty and bulk categories.
Depth is set per section and can be mixed across a run. We recommend grouping same-depth sections together for a cleaner visual line and easier future stocking, but there is no structural rule against transitioning depths at a section join.
Base decks start at 13" for standard sections and 16" for HD sections [cite: Lozier Catalog PDF, IS Section spec, item 4]. Merchandising shelves that mount above the base (TL Tilt-In and DL Drop-In) can go shallower for specialty applications, down to 7" [cite: Lozier Catalog PDF, TL Shelf spec p.39 and DL Shelf spec p.40]. But the base deck itself will not go below 13" on a standard section, or below 16" on HD.
13": HBA, Pharmacy, Cosmetics
In our experience, 13" is the working depth for narrow-footprint categories where the product itself is compact: Health and Beauty Aids, over-the-counter medications, prescription pharmacy shelving, and cosmetics. The category benefit is aisle width: a 13" deck on both sides of an island gives you back-to-back 26" of fixture footprint, which leaves more of a narrow store as walkable aisle.
If your project uses HD components (heavier load rating, HD Uprites and HD Base Brackets), 13" is off the table and 16" is your shallowest option [cite: Lozier Catalog PDF, IS Section spec, item 4].
16": General Merchandise, Specialty Retail, Convenience
Sixteen inches is, in our experience, the workhorse depth for general merchandise. It handles most packaged snacks, personal care sizes above the compact tier, small housewares, greeting cards, and single-facing beverage bottles. Convenience-store operators we work with tend to use 16" across most of the store outside the beverage cooler transitions. Hardware retailers use 16" for their small-parts wall.
If you are running a specialty store and you are not sure what depth to pick, 16" is our default recommendation. It handles a broader SKU mix than 13" without eating the aisle the way 19" does.
19": Center-Store Grocery and Multi-Facing Beverage
Nineteen inches is, in our experience, the grocery center-store standard. It carries multiple facings of standard grocery packaging (cereal boxes deep, canned soup rows, boxed pasta). Larger convenience formats often move their beverage sections to 19" so a bottle can sit two-deep on the shelf.
The tradeoff is aisle width. An island of 19" decks on both sides consumes 38" of floor before you account for the base front. Base Brackets do not add to that footprint (they are ordered to match the deck depth, and actual bracket length is 3" less than nominal deck depth [cite: Lozier Catalog PDF, Base Bracket spec p.19]), so 38" is the number to plan around. Verify your aisle plan supports it before ordering.
22": Bulk, Case Goods, Warehouse Formats
Twenty-two inches is, in our experience, where you stop selling individual units and start selling multipacks. Warehouse-format grocery, bulk paper goods, case-quantity soft drinks, big-bag pet food, and the club-store category mix all default here in the projects we quote. Any category where the customer expects to buy in case or multipack quantity benefits from the extra depth.
Twenty-two-inch decks change the customer experience of the store. The aisle reads wider, the merchandise reads bulkier, and the format signals value pricing whether or not that is your positioning. Use it deliberately.
25" to 31": Specialty Bulk, Pallet Adjacent
The 25", 28", and 31" decks [cite: Lozier Catalog PDF, IS Section spec, item 4] show up, in our experience, in three specific applications: pet food (large bags need the depth), pallet-adjacent break-pack areas in club stores, and specialty categories like large housewares or oversize seasonal. If you are looking at these depths for general retail, step back and ask whether you actually need them. Most of the time a 22" deck plus a wider aisle solves the same problem with more flexibility later.
Note that only BB28 and BB31 Base Brackets are rated for Heavy Duty in the Base Bracket line [cite: Lozier Catalog PDF, Base Bracket spec p.19: "BB28 and BB31 are rated for Heavy Duty"].
Mixing Depths in One Store
Mixing depths across categories in a single store is normal and expected. A grocery store might run 22" on paper goods, 19" on canned goods, 16" on the checkout impulse zone, and 13" on the pharmacy insert. Uprites are shared across depths, but Base Brackets are not: they are ordered to match the deck depth of each section (BB13, BB16, BB19, etc.) [cite: Lozier Catalog PDF, Base Bracket spec p.19, item 2 "Deck Depth BB: 13", 16", 19", 22", 25", 28", 31""]. Plan the transition at a natural category break rather than mid-aisle, and order the correct bracket depth for each section.
What the Shelf Above the Base Does
The base deck depth sets the section footprint. Merchandising shelves above the base can be shallower. TL Tilt-In and DL Drop-In shelves are both offered in 7", 10", 13", 15", 16", 17", 19", 20", 22", 25", 28", and 31" depths [cite: Lozier Catalog PDF, TL Shelf p.39 and DL Shelf p.40]. A common pattern is a 22" base deck with 19" merchandising shelves above so the base carries bulk stock and the top shelves show a cleaner presentation. Specify shelf depth separately from deck depth in your BOM if you want this pattern.
A Practical Rule
Match the deck depth to the deepest single product in the category you plan to merchandise there, plus one to two inches of margin. If your deepest SKU is a 14" cereal box, run 16", not 13". If your deepest SKU is a case of soda, run 22", not 19". When you inherit an existing store and you are replacing fixtures, measure the actual product depth on the current shelf before ordering. What the previous operator planned for is not always what is on the floor.
Lead time on Lozier decks and shelves in Standard finishes (PLT, CHR, W08, WHT, GRY, SIL) is usually 1 to 3 business days. Optional Catalog Colors run 8 to 10 weeks. For the complete section-width and deck-depth reference across every Lozier configuration, see our Gondola Shelving Sizing Guide. To spec a project with mixed depths, use the shelf configurator or send us your floor plan and we will lay it out.