Harmonics Vintage Chestnut VC403S (Discontinued Costco)

Harmonics Vintage Chestnut is a Costco-era warehouse-club laminate color identified on carton ends as part VC403S (also written VC-403s or VC 403 S). Public leftover forums place Costco sales around ~2009; the color was depleted thereafter. FlooringFX archives include HAVE offers of sealed boxes and loose lengths, and NEED threads asking for a few cartons after Costco stopped stocking it.

This page is a citeable ID hub for leftover matching. It does not list live inventory. Confirm every code and measurement on your carton before buying or posting a Match listing.

Identification

Field	Verified value
Common name	Vintage Chestnut
Brand / line	Harmonics (Costco warehouse-club laminate; Mohawk-associated)
Part / model	VC403S · also VC-403s · VC 403 S
Approx. era	Sold at Costco ~2009 per public leftover forums; depleted thereafter
Commenter-reported size	~3/8 in. (+1/16) × 6-1/8 in. × 54-11/32 in. Verify on the carton end; do not treat comment sizes as factory specs.
Locking	Many Harmonics runs used Uniclic; confirm the profile on a spare plank
Archive context	FlooringFX HAVE offers of sealed boxes and loose lengths; repeated NEED asks for 2–14 boxes across U.S. metros

How to ID Vintage Chestnut on a carton

1. Read the brand strip: it should say Harmonics (or a closely related Costco Harmonics end mark), not TrafficMaster, LifeProof, Pergo, or Style Selections.
2. Match the color name Vintage Chestnut and part VC403S / VC-403s.
3. Measure a spare plank (thickness with pad, width, length) and photograph the full carton end before you post.
4. Do not mix with Vineyard Cherry VC506S, Antique Hickory AH404S, or any chestnut-named look-alike from another retailer.

Full Costco / Harmonics table: Discontinued Costco / Harmonics flooring reference. Carton-end walkthrough: label decoder.

Where people look for leftovers

• FlooringFX Match: post NEED or HAVE with carton photos and the exact part string. Browse the Match board first.
• Mohawk outlet / factory closeout patterns: same sourcing path noted on the Costco Harmonics hub. Outlet lists may show depleted Harmonics rows; they do not restock Costco warehouse colors for retail repair.
• Leftover channels: Marketplace, Craigslist, local garage leftovers, and other channels summarized in where people look for leftover discontinued flooring.
• Repair volume: most repair jobs need a small band of boxes; see how many leftover boxes most repairs need.

What will not match

• Home Depot TrafficMaster or LifeProof colors that only share a wood-tone word
• Lowe’s Style Selections or other house-brand chestnut look-alikes
• Pergo XP colors that only look similar in a photo (different locking and pad stack). For XP contrast, see the Pergo XP colors reference.
• Any “close enough” click plank with a different locking profile, thickness including pad, or brand strip

Name reuse across brands is common. See the name collisions table before treating a similarly named leftover as interchangeable.

Sources: FlooringFX Costco / Harmonics reference; archive thread Harmonics / Home Design leftovers (comment context for VC403S size and HAVE/NEED activity; comments are not republished here as listings); public leftover forums placing Costco sales ~2009. Eras approximate. No leftover inventory is offered for sale by FlooringFX.