RainDrain RD12 Rain Drain, Green RAINDRAIN is a the Original Rain removal system, Keeps water away from foundations and basements, Prevents erosion and landscaping washouts UV inhibited polyethylene for durability and pliable softness Fits standard downspouts  2" x 3" and 3" x 4" and 4" round Easy to install, fastening twist tie included Easy to remove, recommended to remove and store during freezing temperatures, additional tie needed