What is the difference between kitting and fulfillment? Kitting assembles individual components into one new sellable unit—a bundle, a display, a kit—with its own SKU. Fulfillment is what happens after: receiving the order, picking, packing, labeling, manifesting, and shipping. A 3PL running both under one roof removes the inter-vendor freight, the duplicate inventory count, and the hand-off where kit shortages surface.
Did you know KSP was born to provide 3PL kitting services to Fortune 500 organizations in the state of MN before growing nationally and serving eCommerce brands that sell DTC and retail? In fact, the original name of the business spoke to just that, Kitting Solutions Plus.
For those that may not be familiar, kitting is a process where individual items or components are gathered and combined to create a new, distinct product or package. This practice is commonly used by businesses that offer bundled, assembled or display products to their customers.
Fast forward a handful of years and customers were wanting more.
“Can you warehouse my product?”
“If I provide a distribution list, can you ship my product on an as needed basis?”
“Can you support my Shopify orders?”
The time had come to evolve and offer more than just kitting as a solution to our customers.
In 2019 we moved into a larger warehouse space to support that evolution. The warehouse included 10,000 square feet of open kitting space plus approximately 4,000 pallet locations for storage and fulfillment. At the time, our fulfillment to kitting ratio was 1:1.
The new model proved to be very successful. By the end of 2020, the warehouse was busting at the seams. We had started working with a new customer that not only wanted us to kit all of their finished goods, they wanted us to distribute them in mass quantities (the only thing we may ever thank the pandemic for 😊).
The search was ON for new space to allow for this continued growth.
We have just completed our 2nd year in the new 225,000 square foot warehouse. The fulfillment to kitting ratio is now 10:1. High-velocity ecommerce order fulfillment and kitting stopped being two businesses and became one operation, with 32.1M orders shipped and 20.9M kits built under the same roof (and growing).
The Fulfillment-to-Kitting Ratio: Why 10:1 Still Needs Kitting
When KSP moved into our 2019 facility, 10,000 square feet was kitting floor and 4,000 pallet positions were fulfillment storage. Our operational split was 1:1. Today, inside our 225,000 sq ft Brooklyn Park distribution center, fulfillment order volume outpaces kitting projects 10:1. Every successful brand scaling its fulfillment volume eventually triggers continuous kitting demand.
Almost every fulfillment client on our floor has required a kitting project. Kitting is the recurring merchandising engine that keeps consumer brands moving. Across 32.1M shipped orders, five specific demand drivers consistently bring fulfillment clients onto the kitting floor:
- Promotional Bundling & Holiday Sets: Combining multiple core products, custom gift packaging, and seasonal inserts into a single promotional SKU to increase Average Order Value (AOV) without multiplying pick fees at checkout.
- Retail POP & PDQ Display Builds: Assembling point-of-purchase displays, shelf trays, and counter caddies pre-packed with product for retail distribution to Target, Walmart, Costco, and Ulta.
- Monthly Subscription Box Refreshes: Collation, custom tissue wrapping, batch box assembly, and insert coordination executed on a strict monthly drop schedule.
- Influencer & PR Seeding Kits: High-touch, custom packaging runs requiring meticulous presentation, collateral insertion, and protective packing where box aesthetics directly impact brand reputation.
- Multi-Pack CPG Conversions: Shrink-wrapping, poly-bagging, and labeling individual units into 2-packs, 3-packs, or variety packs to meet marketplace requirements and reduce small-parcel shipping overhead.
When a 3PL treats kitting as an afterthought, these projects compete with daily outbound shipping for bench space and pickers. KSP maintains a dedicated 50,000 sq ft kitting floor physically separated from the pick/pack lines, ensuring high-volume assembly runs never delay the daily 2:00 PM CT same-day shipping cutoff.
Where Kitting Ends and Fulfillment Begins on the Floor
The operational line between kitting and fulfillment must be razor-sharp. When warehouse teams blur the boundary, inventory records start getting out of hand, component shortages freeze pack benches, and brands oversell stock on Shopify. Kitting is a sub-assembly and manufacturing process while fulfillment is order orchestration and distribution.
On the floor, that separation follows a six-step operational chain:
- Inbound Receiving & Inspection: Bulk components—primary products, corrugated cartons, protective inserts, marketing collateral—arrive through our 29 dock doors. Every component is counted, inspected, and received into Logiwa WMS as raw material inventory.
- BOM Build & Work Order Release: Operations configures a Bill of Materials (BOM) establishing exact component ratios and packaging requirements. A formal work order issues to the kitting floor specifying batch size, line layout, and quality check gates.
- Line Assembly: On our 50,000 sq ft kitting floor, dedicated assembly teams build units along configured tables, applying tamper seals, barcodes, and protective dunnage according to customer specifications.
- The Handoff Line (LPN Generation & Putaway): This is the exact threshold where kitting ends. The moment a kit is completed, it ceases to exist as raw components. It is assigned its own License Plate Number (LPN), scanned into the WMS under its parent SKU, and put away into active racking. Raw inventory decrements and finished goods inventory increments.
- Order Release & Automated Picking: Customer orders drop into the WMS from Shopify, Amazon, or retailer EDI. The system routes pick tasks directly to our fleet of 60 Locus Robotics AMRs (Autonomous Mobile Robots), navigating aisle locations to retrieve the pre-assembled parent SKU.
- Scan-Verification, Manifest & Dispatch: At the pack bench, associates scan the finished unit barcode (99.999% pick accuracy verification), auto-generate compliant carrier labels via multi-carrier rate shopping, and stage pallets for carrier pickup.
By enforcing this handoff, a finished kit is treated by the fulfillment system as a single inventory record, not an ad-hoc collection of parts. Order pickers never pull loose items to assemble a bundle at the shipping station.
How Kitting Shows Up in Subscription, Retail, and DTC Order Flow
Kitting execution varies drastically depending on sales channel requirements. A 3PL running hybrid B2B and DTC fulfillment must adapt line setups to match distinct channel rules:
DTC Ecommerce Bundles: Direct-to-consumer buyers expect fast delivery and spotless unboxing. Kitting allows for pre-assembly, so the team picks one finished kit instead of five separate components, and stores one record instead of five. Because the parent SKU lives in our Logiwa WMS with component-level bills of material, kit availability stays accurate on the storefront instead of drifting from what is physically on the floor.
Recurring Subscription Boxes: Subscription programs rely on scheduled batch releases where thousands of identical boxes must ship within a 48-hour delivery window. At KSP, we build to a bill of materials per client, so a bundle can change by retailer, holiday, promotion, or monthly curation cycle—the same discipline that makes recurring subscription box programs hold up at scale. Pre-kitting the entire monthly run in advance is one method we use to maintain turn dates without choking daily ecommerce dispatch.
Retail & B2B Wholesale Distribution: Selling into brick-and-mortar retail introduces strict vendor compliance guides. Retail kitting demands specialized labeling, inner-pack cartonization, master carton packing, pallet slip-sheets, and POP/PDQ retail display builds. Shipments to big-box distribution centers require GS1-128 barcode labels and EDI integration via SPS Commerce. A minor barcoding or packout deviation triggers costly chargeback penalties from retailers like Target, Walmart or Amazon. Professional kitting ensures 100% routing-guide compliance before freight leaves the dock.
Why Splitting Kitting and Fulfillment Across Two Vendors Costs Margin
Many growing brands contract one specialist to assemble kits (a contract packager or regional kitting house) and an outside 3PL to warehouse and ship orders. While each vendor may appear competitive on paper, separating these functions introduces four severe operational leaks that drain gross margins:
- Split-Freight Overhead: When kitting and warehousing are separated, brands pay redundant freight legs. Raw packaging and components ship from suppliers to the co-packer, then assembled kits are then palletized and trucked via LTL freight to the 3PL fulfillment warehouse. Consolidating both under one roof eliminates intermediate freight bills entirely.
- Inventory Discrepancies & Blame-Shifting: When prepped kits arrive at an external 3PL, inbound receiving counts frequently clash with the packhouse packing manifest. If a shipment arrives short 75 units, the 3PL blames the packager, while the packager insists the 3PL miscounted at the receiving dock. The brand absorbs the loss. One team managing receiving, assembly, and fulfillment creates single-source accountability.
- Lag Time & Inbound Dock Holds: Co-packers ship on their schedule, and 3PLs require 48 to 72 hours to receive, inspect, and put away outside freight. When inventory is needed for an active promotional campaign, split-facility transit delays cause stockouts while goods sit inside a trailer or on a receiving dock. That's lost sales, especially during peak season.
- Labor Imbalances: General fulfillment warehouses struggle with kitting because manual assembly pulls pickers away from the pack bench, causing missed order cutoffs. Contract packagers struggle with fulfillment because they lack automated pick tech and carrier rate shopping.
Trucking prepped kits between a contract packhouse and an outside 3PL burns margin on freight and creates finger-pointing when counts drift. KSP houses a dedicated 50,000 sq ft custom kitting and assembly services floor inside our 225,000 sq ft national distribution center, delivering end-to-end assembly, storage, and fulfillment with zero intermediate transit delays.
With this dramatic change in customer needs, some may think the demand for kitting has died. We can tell you with 100% certainty, it has not. Every single one of our fulfillment customers has required a kitting project at some point in their journey. The kitting process is an essential part of the order fulfillment process in so many ways:
Kitting allows for the pre-assembly of products. The order fulfillment process is much more efficient when the team can pick a “pack” of products vs. Picking individual items separately. This also offers more efficient storage need by storing as a “pack” vs. Individual components.
At KSP, we tailor kitting services to meet the specific needs of our clients, allowing for customization of product bundles based on customer preferences whether that be by retailer, holiday or promotion.
Kitting allows for the creation of ready-to-sell product bundles, which can enhance the overall customer experience by providing convenient and appealing packages.
Kitting has and will continue to be a valuable service for all KSP customers; after all, it's the foundation in which we were built.
Kitting and Fulfillment: Common Questions
Do I need kitting if a 3PL already picks and packs my orders?
If an order ever ships as more than one discrete item assembled at pick time—bundles, multi-packs, displays, inserts, gift sets—yes. Pre-kitting converts that into a single pick of a single SKU, which is faster, more accurate, and cheaper per order than assembling at the pack bench.
Is a finished kit tracked as its own SKU?
It should be. A completed kit gets its own parent SKU and its own inventory record, with component consumption deducted against a bill of material. If kit availability is not reflected as its own record, the storefront will oversell parts that are already committed to assembled kits.
Can kitting and fulfillment be split between two providers?
Yes, and it costs money every time. Kits shipped from a contract packager to a separate 3PL add freight, add a receiving count where discrepancies surface, and split accountability when a kit is short. Keeping both in one facility means one inventory record and one team answering for it.
What volume makes outsourcing kitting worth it?
Most brands feel it when kit builds start competing with daily order shipping for the same labor. Batch assembly done ahead of a ship date removes that competition, which is why pre-kitting is standard for subscription, promotional, and retail display programs.
Kitting and fulfillment under one roof — zero split-freight delays
Trucking prepped kits between a contract packhouse and an outside 3PL burns margin on freight and creates finger-pointing when counts drift. KSP houses a dedicated 50,000 sq ft kitting floor inside our 225,000 sq ft national distribution center.
Get full-spectrum kitting and fulfillment under one roof with one accountable operations team, 32.1M orders fulfilled, and direct floor-lead communication.