We work out where each SKU belongs in your warehouse. Fewer metres per order and more free
locations, using the racking you already have. You measure, we calculate.
Today your products sit wherever they happened to be put over the years. Slotting
recalculates every location at once, with one of two objectives:
Objective 1
Gain space
Every pallet in a slot that matches its height. The wasted air you pay for becomes free locations.
+10-20%more capacity, same racking
Objective 2
Gain time
Fast movers next to dispatch. The same order, with far fewer steps.
−20-40%in order preparation
Looking for the technical background? It's in the
GMP slotting guide (in Spanish).
The tool
Walk through your warehouse
The result doesn't arrive as a spreadsheet alone. Search an SKU and see which rack, beam level
and aisle it lands in, with its dimensions in millimetres.
SlotView 3D · 1:09Plan · isometric · free camera
3,646pallets in the sample
158racks with real geometry
0unplaced SKUs
Excelplan export
How it works
We optimise your warehouse without setting foot in it
No site visits and no meetings to schedule. You measure with our kit, we calculate, and in
2-4 weeks every product is where it belongs.
No travelNothing to installAcross the European Union
Before offering it we put it through our own test bench: 15,015 SKUs, 1,286 racks and 26
aisles, using the same remote methodology.
86.8%
of SKUs placed automatically.
100%
of racks used under the picking strategy.
2
strategies compared: you choose on data.
Maximum capacityMaximum picking
SKUs placed
Capacidad86,8 %
Picking83,7 %
Racks used
Capacidad88,1 %
Picking100 %
Wasted height (lower is better)
Capacidad22,8 %
Picking37,5 %
Wasted air costs money. A 1,450 mm pallet in an 1,800 mm slot leaves 350 mm you pay for every month.
On the test bench, wasted height fell from 31.7% to 22.8%.
Hundreds of locations recovered without buying a single rack.
And what the sector reports
20-40%
Picking
Less order preparation time.
McKinsey
15%
Inventory
Less safety stock.
KPMG
20%
Throughput
More orders processed per day.
Deloitte
10-20%
Space
More storage in the same building.
Deloitte
We don't move boxes. We move data.
Four inputs, one optimal location
The algorithm evaluates thousands of product-slot combinations and picks the best. Your team
just carries out the plan, in phases, without stopping the warehouse.
01 · Product
Your SKUs
Dimensions in mm, weight in kg, fragility, turnover and compatibility.
02 · Warehouse
Your installation
Layout, slot size and load capacity of every beam level.
03 · History
Your movements
Orders, seasonality and where picking errors cluster.
04 · Limits
Your constraints
Workflows, incompatibilities and safety: heavy at the bottom, light up top.
Digital replica
Your building, rack by rack
We rebuild it in 3D at its real dimensions, so scenarios can be compared before anything moves.
Heat map · turnoverEnlarge
Cold zones up high and at the back of the aisle stand out immediately.
Saturation and dimensionsEnlarge
Dimensioned in metres, at real size.
By product familyEnlarge
Each family in its own colour.
Dashboard from one runEnlarge
86.9%Occupancy
72.2%Units placed
46.6%Wasted height
53/61Racks occupied
PDF
Service brochure
Six pages covering the method, the SlotView 3D viewer, the test-bench results and
everything you receive. No form to fill in.
✓ Fast movers on the top level or at the back of the building.
✓ Congested aisles next to half-empty ones.
✓ Hand-spans of air between the load and the level above.
✓ Re-arranging by hand every seasonal peak.
✓ Picking errors always in the same zones.
Why GMP
Engineering, not just software
Our own test bench
Validated on 15,015 SKUs before it reached your warehouse.
Two strategies
Capacity and picking, with figures. The decision is yours.
Data quality control
Every measurement is cross-checked before anything is calculated.
European standard
Consultants review the result with EN 15635 in front of them.
Frequently asked questions
Before you start
What is warehouse slotting?
Deciding, on technical criteria, exactly which slot each product goes in, based on its turnover, dimensions, weight and the constraints of the installation. It shortens picking routes and makes better use of the space, without changing the racking.
Do you need to visit the warehouse?
No. We send a kit with a guided Excel workbook and an illustrated manual, your team measures with a tape measure and returns the sheets. No travel, no meetings, and a direct phone line for questions.
Which units do you work in?
The metric system: millimetres for loads and slots, metres for the building and kilograms for weights. That is what European racking manufacturers use and what the EN standards require, so no conversions are involved.
How much work is it for my team?
Between 2 and 4 working days for a warehouse of 500 to 2,000 SKUs. No technical background and no software needed: Excel, email and a tape measure.
How long does it take?
Two to four weeks from receiving the kit, including the days your team needs to measure.
Does the warehouse have to stop?
No. We work on the existing installation: what changes is which SKU occupies each slot. The guide sets out the order in which to relocate, usually during quieter periods.
What is SlotView 3D?
The viewer we deliver the layout in. It rebuilds your warehouse in three dimensions and lets you search any SKU and see where it ends up, with plan and isometric views and Excel export.
Do you work in other EU countries?
Yes. With no travel involved, distance is not a limit: we work across the European Union. Same metric system, same family of EN standards and data processing under the GDPR.
What about confidentiality?
We sign a non-disclosure agreement before receiving a single file, if you prefer. When the project closes we delete or return all information as you instruct.
Is this related to rack safety inspection?
They are separate but complementary services. Slotting decides what goes in each slot; an inspection under EN 15635 verifies the condition and safety of the installation. Relocating loads without knowing the real capacity of each level is a risk.
Getting started is replying to an email
Request your measuring kit
No commitment. Ask for the kit, send us your first sheets and we'll come back with a fixed
proposal covering scope, timeline and price. You'll be talking to an engineer.
We process your data solely to answer your enquiry, in accordance with the GDPR. Details and
your rights in the .
GMP North · Navarra
Pol. Industrial Talluntxe II · C/ O – Nave 7 31192 Tajonar (Navarra)
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Published data, figures and results
The improvement figures quoted on this Website come from two sources, always identified: third-party publications, referenced to their source, and the in-house test bench of GMP CONSULTORÍA INDUSTRIAL. They are informative and indicative: the results of each project depend on the specific characteristics of each installation and on the quality of the data provided, and constitute neither a guarantee of results nor any contractual commitment. The SlotView 3D screenshots and images correspond to sample runs or test benches.
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Privacy policy
Last updated: September 2026
Courtesy translation. The binding version of this text is the Spanish one, available in the Spanish version of this site. In the event of any discrepancy, the Spanish text prevails. GMP Consultoría Industrial S.L. is a Spanish company and these terms are governed by Spanish law.
Personal data provided by our clients (hereinafter, the "User") will be processed by GMP CONSULTORÍA INDUSTRIAL S.L. for the following purposes:
To provide the contracted services, maintain the contractual relationship and follow up on it.
To manage, process and respond to requests, enquiries, incidents, complaints or claims from the User.
To send commercial communications about products and services marketed by GMP CONSULTORÍA INDUSTRIAL S.L. by electronic and/or conventional means.
Data relating to performance of the contractual relationship will be retained for that purpose for as long as the contract is in force and, thereafter, for the period required by applicable law and until any liabilities arising from the contract have lapsed. For commercial communications, data will be processed until the User objects.
Contact data: postal address, email address and telephone number.
Where the User provides third-party data, they declare that they have the consent of those persons and undertake to pass on to them the information contained in this Privacy Policy, releasing GMP CONSULTORÍA INDUSTRIAL S.L. from any liability in this regard.
Warehouse operational data
The files the client sends for the slotting study — item masters, movement histories, drawings and location data — are the client's business information, not personal data, and are handled under a duty of confidentiality. Where agreed, a non-disclosure agreement is signed before any file is sent. At the close of the project, that information is deleted or returned as the client instructs. Should those files incidentally contain personal data, GMP would act as a processor under Article 28 of the GDPR, by means of the corresponding contract.
Lawful basis for processing
The processing of the User's data for sending commercial communications and for profiling is based on the legitimate interest of GMP CONSULTORÍA INDUSTRIAL S.L. in accordance with the General Data Protection Regulation (GDPR) (EU) 2016/679 of the European Parliament and of the Council of 27 April 2016. The processing of data provided when contacting us is additionally based on the consent given by the data subject.
Recipients of your data
Your data will not be disclosed to any other company, except at the request of public authorities in the cases provided for by law.
Commercial and promotional communications
One of the purposes for which GMP CONSULTORÍA INDUSTRIAL S.L. processes personal data provided by Users is to send them commercial communications by electronic and conventional means, with information on products, services, promotions, offers, events or relevant news. These communications will be sent solely and exclusively to those Users who have not previously expressed their refusal to receive them.
If the User wishes to stop receiving commercial or promotional communications, they may unsubscribe by writing to our contact address.
What are your rights?
The User may send a letter to GMP CONSULTORÍA INDUSTRIAL S.L., Pol. Industrial Talluntxe II, Calle O – Nave 7, 31192 Tajonar, Navarra (Spain), or an email to our contact address marked "Data Protection", enclosing a copy of their identity document, at any time and free of charge, in order to:
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GMP CONSULTORÍA INDUSTRIAL S.L. will process the User's data confidentially at all times, observing the required duty of secrecy and adopting the technical and organisational measures necessary to guarantee its security and prevent its alteration, loss, unauthorised processing or access, taking into account the state of the art, the nature of the data stored and the risks to which it is exposed.
Changes
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Cookie policy
Last updated: September 2026
What cookies are
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The use of cookies on this site is governed by Article 22.2 of Spanish Act 34/2002 on Information Society Services and Electronic Commerce (LSSI-CE), by Regulation (EU) 2016/679 (GDPR), by Spanish Organic Act 3/2018 on Data Protection and the guarantee of digital rights, and by the criteria set out in the Spanish Data Protection Agency's guidance on the use of cookies.
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Types of cookies
By who manages them, cookies may be first-party (sent from equipment managed by GMP CONSULTORÍA INDUSTRIAL S.L.) or third-party. By duration, session cookies (deleted when the browser closes) or persistent cookies (kept for the period indicated). By purpose, the categories we use are as follows:
Category
Purpose
Basis
Necessary Always active
Technical cookies, strictly necessary to provide the service expressly requested by the user, to transmit a communication over an electronic communications network and to remember your decision on cookies.
Exempt from consent (Art. 22.2 LSSI)
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Consent
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Behavioural advertising: building user profiles from browsing habits in order to display advertising or track the user on this or other websites.
Consent
Cookies used on this site
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Purpose
Duration
gmp_consent
First-party
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You may exercise your rights of access, rectification, erasure, restriction, objection and portability on the terms described in the . You may also lodge a complaint with the Spanish Data Protection Agency or with your own national supervisory authority.
Updates
This policy may be updated when the cookies used or the applicable legislation change. We recommend reviewing it periodically.
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