Hi Cd, we apologize for this. You should have received solid, edge-glued landing tread from us. It appears you were sent the incorrect material. If possible, you may return that to any Home Depot store, and we can ship the correct item to you. Please contact us at 678-455-5188 (M-F, 8-4 ET), and please have your order number handy. Thank you, and we apologize for this delay in your project.