ADCO 46013 SFS Aqua-Shed Gooseneck Horse Trailer Cover - 28'7" to 31'6" Protect your Gooseneck Horse Trailer with ADCO's SFS AquaShed Horse Trailer Cover. Designed for moderate climates with high moisture. Features triple layer SFS AquaShed top panel and polypropylene sides. Significantly reduces premature aging of trailer and helps maintain resale value. Reduces need for washing, waxing and roof treatments.