What is KPSI on a rug?
KPSI stands for "knots per square inch," and it is a measure of the density of the knots in a handmade rug. The number of knots per square inch is used to determine the quality and value of a rug. Rugs with a higher KPSI have a higher knot density, which means that they have a finer, more detailed design and are generally considered to be of higher quality. Rugs with a lower KPSI have a lower knot density and may have a coarser or simpler design. The KPSI of a rug is determined by counting the number of knots in a square inch of the rug and then multiplying that number by the number of horizontal rows of knots per inch. The resulting number is the KPSI of the rug.