Metro Wire Shelving Finishes: Chrome vs Epoxy vs Stainless
Which Super Erecta finish belongs in a dry store room, a walk-in cooler, a freezer or a wash-down area — and when to step up to MetroMax polymer. Then design and price your shelving in the Metro Wire Shelving BuildQuote.
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Common finish families
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Typical environments
1929
Metro founded
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Metro online designers
Why the Finish Matters More Than the Shelf Size
Super Erecta wire shelving is the same basic system in every finish: posts with a numbered groove every inch, tapered split sleeves that lock the shelf at any height, and open wire shelves that let air, light and sprinkler water through. What changes between finishes is how the steel is protected — and that decides whether a unit still looks and works right after five years in your environment.
The most common mistake we see is chrome shelving installed in a walk-in cooler because it matched the dry store room. Chrome is bright and economical, but condensation and temperature swings attack it. Buyers then search for “gray epoxy wire shelving” or “Metro green epoxy” to replace it. Choosing the right finish the first time is cheaper than replacing it.
We represent Metro (InterMetro Industries, founded 1929 in Wilkes-Barre, Pennsylvania, creator of the original Super Erecta system) and have specified Metro shelving across the West since 1997. For the full product line see Metro wire shelving; for wire shelving across manufacturers see our wire shelving guide.
Chrome: Bright, Economical, Dry Areas Only
Chrome-plated Super Erecta is the classic look for dry storage, back-of-house store rooms, retail stock rooms, offices and display. It is the most economical plated finish and the easiest to keep looking clean in a dry room.
Where chrome fails is moisture. Condensation in coolers, humidity near dish rooms, and salty or acidic product break down the plating, and once rust starts it spreads along the wires. As a rule, keep chrome out of walk-in coolers and freezers, dish and pot-wash areas, and anywhere the shelving is washed down.
- Good for: dry store rooms, stock rooms, offices, retail back rooms, display
- Avoid: coolers, freezers, wash-down, humid or corrosive areas
Chrome security unitDry, lockable storage for valuables.
Chrome cantilever shelfDisplay and merchandising in dry areas.
Super AdjustableTool-free height changes; check finish availability by part.Metroseal Epoxy: The Default for Coolers and Freezers
Metroseal is Metro’s epoxy-coated finish system, usually seen in gray or green. The epoxy coating covers the wire, so moisture never reaches bare steel in normal cold-storage service. That makes Metroseal the usual specification for walk-in coolers, freezers and other damp, non-wash-down areas.
Gray and green perform the same; colour is a housekeeping choice. Many kitchens use one colour for cold storage and another for dry storage so units do not wander between rooms. Metro offers Microban product protection on selected Metroseal lines; it is a product-protection feature, not a substitute for cleaning, and we make no health claims for it.
Epoxy is tough, but it is still a coating. Avoid dragging heavy cases across shelves, and keep it out of continuous wash-down or harsh chemical areas — that is where stainless or polymer earn their cost.
Metroseal greenSame performance as gray; use colour to zone rooms.
Gray epoxy security unitLockable cold storage for high-value product.
Green epoxy security unitSecure storage in damp areas.Stainless Steel: Wash-Down, Corrosive and Clean Areas
Stainless Super Erecta is solid stainless wire rather than a coating, so there is nothing to chip. It is the finish for areas that are washed down, exposed to chemicals or brine, or held to a high cleaning standard: meat and seafood rooms, dish areas, labs, sterile processing support and many cleanroom-adjacent spaces.
Stainless costs more than plated or epoxy shelving, so specify it where it pays: the wet room, not the whole building. Pair stainless shelving with stainless or high-temperature casters if units roll through washers or autoclaves.
See also our stainless steel shelving guide for options across manufacturers.
Stainless security unitLockable storage for wet or clean areas.
Stainless lab cartsSolid stainless shelves for lab utility work.
Autoclave castersHigh-temperature casters for washer and autoclave use.Brite, Black, ESD and Polymer Alternatives
Super Erecta Brite is a bright zinc finish for dry, cost-sensitive storage — a step below chrome in appearance, intended for warehouses and stock rooms. Black and decorative finishes suit front-of-house display. ESD-safe Super Erecta is built for static-sensitive electronics work and is specified with conductive casters and grounding.
When even stainless is overkill on cost but epoxy is not enough — constant wet, cart washing, ice, brine — look at MetroMax polymer shelving. MetroMax uses polymer shelf mats on corrosion-resistant frames and has its own Metro Polymer Shelving BuildQuote.
Black finishDisplay and merchandising.
Enclosure panelsGray epoxy panels close the sides of a unit.
Plated castersFor mobile units in dry areas.Choosing a Finish by Environment
| Environment | Recommended | Acceptable | Avoid |
|---|---|---|---|
| Dry store room / stock room | Chrome or Brite | Metroseal epoxy | — |
| Walk-in cooler | Metroseal epoxy | Stainless, MetroMax | Chrome, Brite |
| Walk-in freezer | Metroseal epoxy | Stainless, MetroMax | Chrome, Brite |
| Dish / pot-wash area | Stainless or MetroMax | — | Chrome, Brite, epoxy |
| Meat, seafood, brine | MetroMax or stainless | — | Chrome, Brite |
| Lab / clean support | Stainless | Metroseal epoxy | Brite |
| Electronics assembly | ESD-safe Super Erecta | — | Standard finishes |
| Retail front-of-house | Chrome or black | — | — |
Design & price it online: Metro Wire Shelving BuildQuote
Choose your environment and the Metro Wire Shelving designer recommends a finish, then builds the unit: posts, shelves, split sleeves, feet or casters, add-on units and accessories, with load checks and freight to your ZIP. Save and share the quote, or send it to us to review.
Design & Price It Online All Metro Designers Call (800) 326-4403
Finish Comparison at a Glance
| Finish | Protection | Relative cost | Look | Typical life driver |
|---|---|---|---|---|
| Brite zinc | Plating, dry use | Lowest | Bright industrial | Humidity |
| Chrome | Plating, dry use | Low | Bright, classic | Condensation |
| Metroseal epoxy | Epoxy coating over steel | Medium | Gray or green | Chips from impact |
| Stainless | Solid stainless wire | High | Brushed steel | Very long in wet use |
| MetroMax polymer | Polymer mats, corrosion-resistant frames | Medium–high | Gray / polymer | Built for wet use |
Relative cost is a rule of thumb across a typical unit; exact pricing depends on size, shelf count and accessories, which the online designer calculates for your configuration.
- Match finish to the worst condition the unit will see, not the average
- Zone colours (gray vs green) by room to stop units migrating
- Use stainless or high-temperature casters on units that are washed
- Mixing finishes inside one unit is possible but complicates reorders — keep each unit consistent
- Plan seismic hardware early in seismic zones; it changes post and foot choices
Shelf Sizes, Load Capacity and How the Finish Affects Them
Finish and size are separate decisions, but they interact. Every Super Erecta finish is offered across the common shelf grid, so you rarely have to give up a size to get the right coating. What changes is availability by depth and length, lead time, and how much margin you want on load capacity in a cold, wet room where the shelf will be loaded heavier and cleaned harder than a dry stock room.
| Dimension | Common options | Selection notes |
|---|---|---|
| Shelf depth | 14, 18, 21 and 24 inch | 18 inch suits most cases and bins; 24 inch fits full-size food boxes and kegs but reduces aisle width |
| Shelf length | 24 to 72 inch in 6 inch steps (most finishes) | Shorter shelves carry more per shelf; 72 inch is best kept for light, bulky items |
| Post height | Roughly 14 to 96 inch (stationary); shorter posts for mobile units | Leave clearance under sprinklers and the cooler ceiling; mobile units should stay at or under about 74 inch for stability |
| Shelves per unit | Typically 4 or 5 | More shelves spread the load; shelf spacing adjusts in 1 inch increments on the post grooves |
| Capacity per shelf | Highest on 36 and 48 inch shelves, lower as length grows | Distributed load, stationary unit; mobile ratings are set by the casters and are lower |
Two practical rules keep finish and capacity working together. First, in coolers and freezers specify one size down in length if a shelf will carry dense product such as cases of liquids or frozen protein; the extra margin offsets the heavier, more uneven loading that happens in a busy walk-in. Second, keep the bottom shelf at least 6 inches off the floor in food areas so the floor can be cleaned underneath, and choose solid or mat shelves only where you need to stop small items falling through, because open wire keeps air moving around product. We confirm the exact rated capacity for your sizes on the current spec sheet with every quote.
Cleaning and Care by Finish
| Finish | Routine cleaning | Avoid |
|---|---|---|
| Chrome | Dry or damp cloth, mild detergent, dry afterwards | Standing water, salt, chlorine and constant humidity |
| Metroseal epoxy (gray or green) | Warm water and mild detergent; rinse and air-dry | Abrasive pads and wire brushes that cut through the coating |
| Stainless steel | Detergent and water, or a stainless cleaner, wiping with the grain | Chloride bleach left on the surface and steel wool, which leaves rust spots |
| Brite zinc / black | Dry dusting or a damp cloth | Wet or washed areas |
| MetroMax polymer mats | Lift out and run through a dishwasher or wash sink | Solvents not listed in the care guide |
Most finish failures we see are caused by cleaning rather than by the room. A chrome unit hosed down every night will show rust within months, and an epoxy unit scrubbed with a green pad will chip at the wire crossings where moisture then gets in. If your sanitation plan calls for daily wash-down, choose stainless or polymer from the start rather than replacing coated shelving early.
Mixing Finishes in One Room
It is common, and sensible, to mix finishes. A typical commercial kitchen runs Metroseal epoxy in the walk-in cooler, stainless beside the dish machine, and chrome or Brite in the dry store. Because posts and shelves share the same Super Erecta system, the units look consistent and accessories such as shelf dividers, label holders and casters carry across. Just avoid mixing finishes within one unit: a chrome shelf on epoxy posts will still corrode at the joint in a wet room. In the BuildQuote you can set the finish per unit, so a whole room can be priced in one quote.
Shop Metro Wire Shelving Online
Buy select items directly from our online store, or request a quote for volume, custom sizes and freight-rated orders.
Finish choice also matters for locked and rolling units: see Metro security shelving and Metro mobile shelving units & stem casters.
Metro Wire Shelving Finish FAQ
What is the best Metro wire shelving finish for a walk-in cooler?
Is gray or green Metroseal epoxy better?
Can chrome wire shelving go in a cooler?
When should I pay for stainless?
What is Super Erecta Brite?
Does Metroseal include Microban?
Can I configure and price Metro wire shelving online?
How much weight does a Metro wire shelf hold?
What size Metro shelving fits a walk-in cooler?
How do I clean Metroseal epoxy shelving?
Pick the Right Finish, Then Build It
Design your units in the Metro Wire Shelving BuildQuote or ask a specifier. Call (800) 326-4403 or request a quote online.