Source policy

Space Made Useful uses sources that can be traced to the particular product or piece of advice. The purpose is to make a measurement or limitation useful, including when the available information is incomplete.

Sources we prioritise

For product dimensions, compatible parts, load ratings and installation, we prefer the exact manufacturer’s technical drawing, manual or model-specific specification. For care and household guidance, we use the relevant maker, recognised professional body or other authoritative primary source.

A document for a similar-looking model is not enough to establish the dimensions or fitting requirements of the selected one. We check model numbers, article codes, size, material, colour where relevant and the included components.

What an Amazon listing establishes

The selected Amazon UK listing helps us check the offer readers will reach: its model, variation, pack quantity, included parts, availability and product photographs. Marketplace titles and dimension fields can contain errors or information copied from another variation.

When those fields disagree with an exact maker drawing, we investigate the difference and explain a material conflict in the guide. We do not silently combine the favourable measurements from two different versions.

Amazon is the shopping destination for our product recommendations. Manufacturer documents used as factual evidence are not alternative retail recommendations. Product photographs are loaded from Amazon’s authorised service; generated editorial images are not a source for product measurements.

Reviews and other secondary evidence

User reviews and retailer explanations can help identify recurring questions, such as difficult assembly or a tight opening. They are supporting evidence to investigate, not proof of a universal fault or a replacement for the exact fitting instructions.

A reported shoe count, jar count or storage capacity is not a substitute for the usable compartment dimensions. We explain what needs to be measured and avoid turning an illustrative photograph into a guaranteed capacity claim.

Missing or conflicting information

We distinguish a confirmed specification from an estimate, rounded figure or worked example. If no reliable measurement is available, we say what remains to be checked or omit the claim. A stated stacking relationship does not establish lid interchangeability, and an upright shelf rating does not automatically apply to a horizontal arrangement.

Some questions depend on the reader’s own furniture or possessions. We provide a measuring method and relevant constraints rather than inventing a universal clearance allowance.

Calculations and worked examples

Our guides use documented dimensions to work out footprints, clearance differences and alternative orientations. We identify illustrative inputs and explain the assumptions behind a layout. Units and the calculation need to be clear enough for readers to repeat with their own measurements.

A rectangular footprint calculation describes the space bounded by the listed length and width. It does not establish how many irregular objects fit inside a container. Opening movement, supports, grips and the exact product instructions still need to be considered alongside the numbers.

Records and review dates

We retain article-level source records and the evidence used for shared product details. Each article’s methodology, placed after its FAQs, summarises the sources and decisions most relevant to that page.

Visible review dates use a month and year. They describe the review recorded for the claim or guide, rather than a live guarantee of stock or specifications. Our editorial policy explains how new evidence and corrections are handled.