Function:The joist hanger is designed for joist-to-header installation in wood-framed constructions like roofs, decking, floors, and ceilings.Our concealed joist hangers accommodate standard 2" x 4" lumber on the market Fit for 2" x 4'' Lumber Hanger:For nominal lumber 2 x 4 . It is a perfect fit for indoor and outdoor usage, such as home, garden, barn Easy to Install: The installation step is to mount the joist on the header beam, slide the ledger ends into the joist, then tighten the wood screws.Joist hanger has speed prongs to temporarily position Material:The outdoor accents concealed joist hanger is made of strong-hardness steel.No easy rust,sturdy and durable Package: 12PCS .Each concealed joist bracket included 2 self-taping screws and 8 wood screws. Item weight(each): 0.5 lbs/ 0.22 kg Application:The concealed joist hanger is designed for joist-to-header installation in wood-framed constructions like roofs, decking, floors, and ceilings.Our concealed joist brackets accommodate standard 2" x 4" lumber on the market.It is a perfect fit for indoor and outdoor usage, such as home, garden, barn, and amusement park Feature -Fit for 2" x 4'' Lumber Hanger -High Quality Materia :Concealed-Flange Hanger are made of strong-hardness steel -No Pre-drilling Installation -Widely Application: It is a perfect fit for indoor and outdoor usage, such as home, garden, barn, and amusement park Each concealed joist bracket included 2 self-taping screws and 8 wood screws Product Size: 2.5"L x 1.8"W x 3.7"H Item Weight(Each): 0.5 lbs Color: Black