ADCO 46005 SFS Aqua-Shed Bumper-Pull Horse Trailer Cover - 16'1" to 18' Protect your Bumper-pull 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.