The phrase "are not much wider" is correct and usable in written English.
It can be used to compare the width of two or more objects or concepts, indicating that the difference in width is minimal.
Example: "The new model's tires are not much wider than the previous version's."
Alternatives: "are only slightly wider" or "are not significantly wider."
And at the site's southern edge, the proposed Liberty Street Park is not much wider than the sidewalk next to it.
My apartment, which is in downtown Manhattan, has one of those little balconies that is not much wider than a chair, which, Ms. Ward warned me, a child could use to climb up and over the railing.
Her range isn't much wider than that, but in the big scenes Ms. Britton, an expert at reaction shots and cutting asides, is often there to bail her out.
While fascinating to tech insiders, there wasn't much wide appeal.
Indeed, the report abounds with ideas for green taxes: a hike in the landfill tax on business, for example, and incentives for homeowners to add energy-saving features to their properties.Green taxes are not much more popular among the wider electorate than among the Tory faithful, however.
Dikötter is not much interested in a wide-ranging account that would necessarily include China's internal political and economic situation in the nineteen-fifties, the shifting hierarchy of the C.C.P., or the Chinese sense of siege following the Korean War and the sharpening of Cold War divisions in Asia.
Though Ms. Dun, a 56-year-old native Swede, does the bulk of her business at the fairs -- or faires, to enthusiasts -- her thrice-yearly open houses attract the diehard faithful to tiny Ulster Park, a place even the locals concede is "not much more than a wide spot in the road with a sign," in the words of Ray Rice, the town supervisor of Esopus, which includes Ulster Park.
Again by Gilbert, it's not much to look at, but the wide wedge-shaped yard between the two is a distinctive feature.
In the beloved/behated slide-show program PowerPoint, in contrast, there's not much new apart from the Office-wide improvements.
It's early morning and there's not much traffic on the river, which is wide and brown.
