IHFL (18 ga) and IHF (16 ga) series face mount hangers feature speed prongs for temporary placement and seat cleats to grab the bottom flange of the supported I-joist. Diamond holes in header and joist allow for optional Max nailing for customized fastening to match allowable load needed. Install nails in all fastener holes when the Max allowable load is needed while lighter load capacities can be achieved with a quick installation of round holes only, saving you time and money on the jobsite.