zip hinge - 2 pack | 2-6 pack set downspout gutter hinge - fits 2x3, 3x4, 5 inch, 6 inch - universal fit - made in the usa zip hinge unique 1 of a kind gutter accessory----patent pending. purposes of the zip hinge (1) ensures your downspout extension remains firmly attached to the downspout to protect your home's foundation. (2) provides the ability to move the downspout extension in a vertical position while doing various outdoor activities i.e. mowing, edging, landscaping, gardening etc. inexpensive easy install (diy) - installs takes 1-2 minutes-no skill required. reliable-lifetime warranty. fits any size downspout: commercial & residential. can be painted to match your homes gutter color. protects your home's foundation and sub-structure. apart from the obvious reason & convenience of lifting your downspout extension in a vertical position, there is a substantial constant threat to your home’s foundation. when not having a downspout extension securely attached it lacks the ability to divert water away from the home. downspout is the #1 most important part of your home’s gutter system. downspouts move water out of the gutter system & away from the home’s substructure. when a downspout extension is improperly fastened it compromises the whole system. water can seep into the basement, foundation & cause serious damage to the building’s footing & landscaping. professional rehab or repair estimates for cleaning a flooded basement range from $2,000 to $5,000 and up. most homeowners’ insurance will cover disasters, but not typically cover damage from failure to perform routine maintenance. ****buyer note: **** available in **2 pack, ***3 pack & ****4 pack. (**2 pack = 4 hinges, 18 zip screws & 2 clasps = this completes 2 downspout hinge joints). (***3 pack = 6 hinges, 27 zip screws & 3 clasps = this completes 3 downspout hinge joints). (****4 pack = 8 hinges, 36 zip screws & 4 clasps = this completes 4 downspout hinge joints,).****