Cross compare (two MPNs)

Pick the manufacturer and two part numbers (or catalog slugs). You will land on the spec matrix; URLs normalize to /compare/{brand}/{slug-min}-vs-{slug-max}. Product pages can deep-link with query brand, a, b to prefill the form.

Other ways in

• From a product page: use the Compare on matrix section (or open this hub with side A prefilled from there).
• N-way matrix: /compare/{brand}/multi?skus=a,b,c (same brand, up to eight parts — differing spec rows only).
• From the catalog: open each product and copy the path segment after the brand into the form, or paste MPNs directly.