PART #3168 Aero Pro III Scoop (Use Plug #1999) Base 37" L x 20" W, Overall 48" L x 10.5" H (Open Back) When extra clearance is required Harwood offers these 20 inch wide base designs. Trim / fit to windshield. It's perfect for many drag racing and boat applications. This part is built out of a two piece mold and will have a mold seam. This is normal and it will sand out and not be seen prior to paint. You must provide a reliable day time phone number with your order. If you have any questions please call 800-822-3392.THIS IS AN OVERSIZED GROUND SHIPMENT!