Hillyard Built Merchandise › 12x18 Hillyard Built Class Poster Image 1 of 1 12x18 Hillyard Built Class Poster $12.00 A great size for your room or classroom, this poster is designed of words that describe those of us who Hillyard has built. Get notified by email when this product is in stock. Quantity: Add To Cart Added! A great size for your room or classroom, this poster is designed of words that describe those of us who Hillyard has built.