This Pittsburgh Corning Pro-Vantage Glass Block Turn Corners Installation set is the perfect solution for creating curves or turns with glass blocks. The set includes 4-inch architectural blocks in a crisp white color, framed in durable plastic material. The structural glass type ensures a sturdy and secure installation. The Arque Spacers and Pro-Vantage system make installation a breeze, allowing for easy and precise positioning of the blocks. Ideal for any room, these blocks can add a touch of elegance and modernity to your space. Upgrade your windows with this industrial and commercial set, perfect for business and industrial settings.