Used Geradot upright bare injector assembly for blown alch/nitro. This injector includes butterfly shaft, three 5.250" butterflies, barrel valve mount and a cleanable air cleaner assm. Injector is set up for eight 1/8" pipe thread nozzle bodies and weights twenty one pounds as seen in the pictures. Fits 6-71 thru 18-71 roots type superchargers with 13.250" bolt patterns. Butterfly diameter is 5.250", injector from blower surface to top of injector is 6.00", from blower surface to top of air cleaner is 12.375", air filter is 22.250" end to end and 16.00" wide. Air filter is washable K&N type and appear to be in fair shape. Air filter plates are anodized .125" alum. with a adjustable air bleed on the top to help get the perfect idle rpm and simple to mount to the injector with provided mounting hardware. Injectors are Dow-7 coated then look to have satin black paint on them. Injectors are only being sold with air filters and at this time RBS will not separate them. Injector opening on the bottom is 12.375" x 4.125". Just a heads up we currently have four of these injectors so if you are looking to upgrade here is a great opportunity for a multi engine customer to get all matching injectors for you hot rod. Injector weights twenty one pounds as seen in the pictures with the air filter assm. BLOWER IN PICTURES IS FOR PICTURE PURPOSES ONLY. ORDER ON LINE AT WWW.RBSSUPERCHARGERS.COM, PART NUMBER 7003-0048. HAVE QUESTIONS PLEASE CALL 530 274-3835.