Pylex # 10555 Screw-In Post Anchor, 50 inch long with 3 inch adjustment. BLACK COLOR Powder Coated Steel. Heavy Duty. Fits 4x4 Deck Posts.
Fits 4x4 (3-5/8 inch actual) deck posts. The adjustable screw-in foundation post can be used for patios, decks, balconies, sheds etc. Its frost resistant and is not affected by frost heaving. The head height is screw adjustable 3" to make easy installation and leveling.  Holds up to 5000 lbs. BLACK Color Power coated steel.
OPTIONS:
24 inch extension posts
32 inch length (#10565)