As you can tell, the entire quilt is made up of commercial stripes. A few were enhanced with fabric markers so I could get a wider variety of stripes; for instance, the black-and-pinkish-brown and black-and-red pieces in the top photo both started as black-and-white; the two-tone red pieces started as red-and-white.
At the left edge of the quilt most of the pieces are about an inch across. Toward the right edge they're bigger, maybe as much as three inches across. The fine lines of "mortar" between the "bricks" are about an eighth-inch wide.
I've complained in the past about how hard it is to find stripes these days; they're out of fashion, while polka dots are IN, IN, IN. But I scraped together enough to make this quilt last year, and since then have discovered an online source for lots more stripes, so I'm happily embarked on more big projects in this same vein.