Hardy Glass Block Panels Inc is a family owned and operated business that has been serving Chicago and the surrounding suburbs since 1933. All of our Salesmen and Installers have over 30 years of experience and can do any job, big or small. We can help do-it-yourselfers with tips and ideas to achieve a professional quality job. We sell pre-made glass block panels , individual glass blocks, vinyl hopper air vents, and escape hatches. We can make custom sized windows and we also keep hundreds of windows In Stock. For your convenience, you do not have to be home as our salesmen measure your windows from the outside. We offer delivery as well. Call us today for a free no obligation estimate.