Eureka Dr. Seuss Vertical Classroom Banner, Cat in The Hat Welcome, 4 ft.(849664) Includes (1) Dr. Seuss classroom welcome sign poster. Dr. Seuss 'Welcome' sign measures 12'' W x 45'' L. Welcome your students to your classroom, library, or office with the help of Dr. Seuss' Cat in the Hat! This colorful welcome sign is vertically aligned, and makes a great classroom door decoration! Printed on cardstock, this colorful poster will stay intact to welcome new students year after year.