Machrus Ogrow Polycarbonate Replacement Panel K-A23 fits item # OGAL-46A. This is part number K-A23/SKU #OGRPT-K-A23 on Ogrow Greenhouse Manual. The size of this panel is 21.06 x 15.55 x 0.5" (L x W x H). The polycarbonate panels are safe and easy to handle and make your greenhouse shockproof and UV resistant. Get this Machrus Ogrow replacement panel to fix any missing/damaged panels on your Aluminum Greenhouse!