The phrase "a height at" is correct and usable in written English.
It can be used when specifying a particular elevation or level in a physical or metaphorical context.
Example: "The mountain reaches a height at which few dare to climb."
Alternatives: "an elevation of" or "a level of".
By noon, the wall had reached a height at which it became impossible to see into East Berlin from the Western side of the square.
Still, when the American record-holder, Jeff Hartwig, failed to clear a height at the Olympic trials, few believed the United States had a chance to win any medal in Sydney, much less the gold and silver.
This biography also enjoys the jokes, and Carter looks from quite a height at art historians in urinals and male tarts at the Bentinck Street flat Burgess shared with Blunt.
Through field and laboratory tests, the researchers discovered that before it stops eating and spins its cocoon, the corn borer travels down the stalk, usually reaching a height at which it is safe.
But since Beijing, when the towels have come off, she has usually faltered, unable to clear a height at the 2009 world championships and, after a sabbatical, finishing sixth at the 2011 world championships.
When the American record-holder, Jeff Hartwig, failed to clear a height at the Olympic trials, few believed the United States had a chance to win any medal in Sydney, much less the gold and silver, which had not been done in 40 years.
Based on an ingenious combination of skep baskets made of rye straw and wooden support structures, the Sun Hive is intended to be installed at a height of at least 8 feet.
It was also placed distant from exhaust flues or vents and at a height of at least 3 meters above the ground to prevent vandalism.
The presently available equations for determination of heat outputs from these room heaters are valid for a certain height at a specific temperature range.
This NETD corresponds to a height difference at a cloud top of 100 m for an average temperature profile.
In addition, the second step, broadcast-tree construction, builds a broadcast tree having a height of at most τ.
