4-pack decorative downspout natural stone texture splash block rain gutter drain extender wholesaleplumbing supply protect your foundation and landscaping from water damage with this four pack of splash blocks. these decorative gutter extenders were designed to be an attractive addition to your landscape with their natural stone look. besides the aesthetically appealing design, these splash blocks are made from a premium resin that makes them durable yet lightweight. they won’t crack, chip or fade in the elements. each splash block measures 24 inches long to safely divert water from your downspout to prevent erosion and damage from rainwater runoff.