Slab Square Opvi 4 is a regular weight, wide, medium contrast, upright, normal x-height font.
Keywords: signage, posters, headlines, labels, packaging, industrial, technical, retro, utilitarian, mechanical, geometric rigor, industrial tone, signage clarity, system consistency, octagonal, beveled, monoline, angular, chunky.
This typeface is built from sturdy, mostly monoline strokes with squared slab serifs and frequent chamfered corners that create an octagonal, machined look. Curves are minimized or faceted (notably in C, G, O, and Q), and joins tend to be blunt and geometric rather than calligraphic. Proportions read on the broader side, with generous internal counters and clear, open forms, while maintaining crisp, flat terminals across verticals and horizontals. Uppercase forms feel structured and sign-like, and the lowercase maintains the same angular construction with simplified bowls and straight-sided stems.
It works especially well for display settings where a bold, constructed geometry is desirable—such as signage, posters, product packaging, and labeling. It can also serve in UI or technical graphics for short strings, diagrams, or instrument-like readouts where clarity and an industrial tone are priorities.
The overall tone is practical and engineered, evoking stenciled signage, machine labeling, and mid-century technical lettering. Its faceted geometry gives it a retro-industrial character that feels confident and no-nonsense rather than delicate or literary.
The letterforms suggest an intention to translate slab-serif sturdiness into a more engineered, polygonal geometry, emphasizing repeatable angles and flat terminals for strong reproduction. The design appears aimed at creating a distinctive, system-like voice suited to functional display typography.
The design relies on consistent corner treatments and slabby finishing details to unify the alphabet, producing a rhythmic, grid-friendly texture in paragraphs. Numerals follow the same faceted construction, keeping the set visually cohesive for data and labeling contexts.