Finding a split queen box spring is essential if you have narrow hallways or tight staircases that won't accommodate a standard 60-inch-wide queen foundation. Unlike a standard queen, which is one solid piece, a split queen comes in two sections, each measuring approximately 30 by 80 inches.
You can find split queen box springs at major national retailers and specialized mattress stores: Queen Split Box Spring Only - Amazon.com where to buy split queen box spring