This sponge is not cellulose. Customer Care
HI will be 2" thank you '
Thank you Ej for your inquiry. Our QEP grouting sponges may be positioned in different locations in each Home Depot store. We recommend that you call your local store who should be able to advise you of the correct aisle. If you have any further questions please call our Customer Service (866) 435-8665. Thank you for your interest in our product.