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It's North America's favorite wood post anchor... for a lot reasons.
Now you can build a wood railing system on virtually any Surface, Fast, and Easy that Looks Better, Lasts Longer and is residential Code Compliant!
Use with 4x4 wood posts on wood or composite decks, stairs, patios, concrete or any other hard surfaces.
- Guard rails, support posts, gazebos or pergolas
- Composite post sleeves/skirts fit right over
- Fence posts on concrete
You're going to love it.
- No notching decking
- No complicated carpentry, framing or hardware
- Posts are higher and drier for longer life
|Color/Coating||Black powder coat over hot dip zinc|
|Material||Formed/Welded sheet steel|
|Post Size||3.5” to 4” (89mm to 100mm)|
|Dimensions||Base: 5/8” H x 5” W x 5” L (16mm x 128mm x128mm)
Tube: 3.5"h x 1.25" dia (89mm x 32mm)
Inner holes: 0.40" dia, 2" o.c. (50mm)
Outer holes: 0.31" dia, 2.0625" o.c. (51mm)
|Fasteners||For residential engineering guidelines use (4) 3/8”x5 hex head lag screws, minimum (6) #14x3 or 1/4x3” deck screws or hex head lag screws.
Includes: (4) 3/8"x5" lag screws, (8) 1/4x3" galvanized lag screws
|Recommended Uses & Code Compliance||Residential deck railing 36”-42” high, pergola or gazebo posts, support posts.
Maximum post spacing: 6' for 36" 4x4 posts; 4' for 42" 4x4 posts; 8' for 36" 6x6 posts; 6' for 42" 6x6 posts. See Engineering Reports for horizontal, compression and tension loads.
|Composite Decking||Works with composite post sleeves and post base skirts. Post anchor base fits easily under all makes of composite post base skirts except Latitudes.
With Latitudes post base skirt use knife blade to trim inside tabs for fit over post anchor.
|Recommended Wood Species||For best performance and ease of installation use with species ranging from cedar, spruce, redwood, pine, hem-fir with moisture content (m.c.) of 12%-20%. To comply with residential engineering guidelines, do not use any species with specific gravity (density) less than the lowest of the above recommended species.|
|Other Species||Douglas fir – ensure cutting edge of tube is sharp and m.c. not less than 12%. Otherwise, install as if hardwood.|
|Hardwoods||Requires hole saw and forstner bit installation technique as tube can not be impaled into wood easily. See How To Guide.|
|Pre-Drilling||For best performance it is recommended to pre-drill lag screw holes. See How To Guide.|
|Concrete Surfaces||Use minimum of 4 GRK Caliburn or Tapcon 1/4" screws at least 2-1/4" long.
Download the full size installation Guide here. Or view a smaller version below:
Shipping charges apply to this product because of its weight.
If purchased with other products that are subject to our "$7 or Free" program, the applied shipping charge will apply only to this product.
For concrete installations use our Concrete Screws
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Featured positive reviews:
I used these to construct a deck railing system using Tigerwood. With a hardwood like that you cannot pound the anchor in - it has to be carefully drilled. I found that the best way to do that was to drill a hole using a forstner bit first. The hole has to be big enough to clear not just the outside of the hole saw bit, but the top part of the hole drill. So you need to go larger than the forstner bit recommended on this site - a 1.5 inch bit works. Once the hole is drilled the hole saw then works fine and produces a good sturdy hole with center support. The lag screws must be pre drilled in hardwood, of course. I used 2" screws. The screws had enough strength to square up the bottom of the anchors to the posts. The deck was all ready level so no shims were required. A note on drilling the holes. I would not try to drill the holes by hand in a hardwood post such a tigerwood. But, I was able to use my drill press which I believe is a heck of a lot safer and a lo