Outside of budget and space available, there is no limit to how large custom letters can be. But here is our recommendation to keep you from overspending.
The cost-saving secret is staying inside a “golden ratio” of dimensions measuring 96” (wide) x 48” (tall) x 40” (deep). That’s the size of an uncut block of foam. If your project exceeds any of those dimensions, the cutting, gluing, and assembly of pieces from a second block means a significant increase in cost.
Trial and error and many happy customers have shown us that 5' tall is the sweet spot for custom letters and hashtag sculptures. If the goal is getting fans and customers snapping selfies to share on social media, anything taller than 5' and your target audience won’t be able to take a good picture with the letters all in the frame. Smaller than 5' tall and your sign won’t have as much visual impact.
The most common height for hashtags and letters is 44" to 46". Add to that the 12" base necessary to keep your letters from falling over, and you have the perfect height of 5'.