The Bjorn Woodworks new 5 degree pergola extender brackets & lean-to shelter extender kit, makes the perfect addition to our standard kit! This innovative product allows customers to easily extend an angled roof over their treasured belongings. These 5 degree, sloped, 4x4 brackets work perfect as an expander for a carport, lean to shed, covered pergola, cook shack, storage sheds and much more. Extend your angled pergola or lean to as long as needed. Simply buy nominal 4x4 timbers and them to the size needed for your build! Need more sections? No problem, simply purchase a lean to extender kit for each section you'd like to add (these allow you to add an infinite amount of sections). Simply add joists (for support) and roofing panels to make this a strong structure. This kit comes equipped with: (2) 4-Way 5 Degree Angled Roof Brackets (2) Foot Brackets (8) Black Concrete Anchors *All Necessary Matching Black Lag Bolts, needed for install *** NOTE*** These Angled brackets were designed & developed for you to erect an angled roof structure. For any customizations outside the intended or indicated use of the pergola as shown, we advise consulting with an engineer. Always check your local building codes, HOA, and municipal requirements in advance of building as they vary by city/state and region. Recommended to anchor your structure to poured concrete. Adding joists to a roofing structure is absolutely necessary for both rain and snow load and wind load stability.