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4x4 post base anchor flange post support

Quick-Mount 4 X 4 post support flange for permanent or temporary hand, fence, deck, porch railing or post mounting. Heavy Duty High Impac

Our Price: $16.95
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More Products By: Wizard Industries

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UPC Code: 721633120124
Shipping Weight: 1 Pounds
Ships Immediately
Product Views: 76572

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4 x 4 Post Support (3.5" x 3.5"). Some post may need to be trimmed or sanded to fit.

This product fits a standard 4x4 post (3.5"x3.5") For maximum post height of 36". 
Some sanding may be required as 4 x 4 post are not always consistent in size.

Please Read Full Description Prior To Purchase
Support flange for permanent or temporary hand, fence, deck, porch railing or post less than 36" tall....


TRIMMING POSTS MAY BE REQUIRED depending on post type................
This product fits a standard 4 x 4 post (3.5" x 3.5"). Some sanding or trimming may be required as 4 x 4 post are not always consistent in size.................


Made from paintable durable ABS. NO fading, aging, and weakening from sun exposure.

Features Not Found In Any Other Deck Post Support

Wizard Heavy Duty High Strength post Support Wizard Heavy Duty Post Supports Wizard Deck Post Support

Sleek Design Post Support

The new Wizard Post Support provides
more style than any of our other 
versions of the Deck Post Support.

Increased Durability

Only the Wizard brand of Post Supports
offer sleek design and Durability.
Our new thicker base, walls and inner
structural grid provides a practical use and looks.

Additional Corner Strength

The unique design of the Wizard Post
Support provides an extra layer of
ribbing in the corners
of the structural frame.

Thicker Extra Strong Base

The Thicker Extra Strong Base provides an
overall amount of rigidity while
enhancing the look of the Wizard
deck post support

Wizard Industries Post Support Wizard Industries Heavy Duty High Strength post Support Wizard Heavy Duty High Strength post Support

Fantastic Looks and
Solid Strength

The Wizard Heavy Duty Post
Supports offer fantastic looks
for many uses.

Extra Thick Walls and
Fastener Holes

Extra Thick Walls and Fastener Holes
make the Wizard Heavy Duty Post
Supports easy to install..

20 Strong Fastener Holes Provide
Strength and Ease Of Installation

The Wizard Deck Post Supports Include
20 Fastener Holes Which Provide
Style and Ease Of Installation

A great look with strength
and durability

The Wizard Professional
Version Deck Post Supports provide great
looks with extra style and durability


  • Wizard Industries Professional  Version. Thicker Base with Reinforced Structural Frame and Thicker Walls. Deck Handrail Post Support Flange Base Trim Anchor
  • ▼ SCREWS NOT INCLUDED ▼ Due to the many ways this heavy duty post support can be fastened we DO NOT include screws so that users have more options of screw types.
  • ▼ Fits a nominal standard 4"x 4" post (actual 3.5"x 3.5" dry post on market). ▼ Sanding / Trimming of posts may be required depending on post type and size.▼
  • ❤ We live and work in Holly, Michigan and we provide 100% Satisfaction and will jump through hoops for you at all times... Just please let us know of anything we can help with...❤

***** It is the users' responsibility to adhere to local and state building codes. This product may not be acceptable in certain areas. Check your specific building codes before use. Use for Ground Floor Decking Only. NOT TO BE USED AS SOLE MEANS OF SUPPORT. ADDITIONAL STRUCTURAL SUPPORT IS REQUIRED FOR POST. ALWAYS FOLLOW PROPER POST INSTALLATION AND OBTAIN PROPER INSPECTIONS FOLLOWING ALL BUILDING CODES AND LAWS. Ships From Holly, MI, and Ukiah, CA *****

Patent Pending

Customer Images:


I was thrilled to use the product and it was so easy. Wizard shipped so fast and that let me start my prpject sooner than later :) 
I did a gate on both sides of our deck. Our dogs love it!
Feel free to use this picture if it helps your company. I will be a returning customer.

Rebecca J M.

Hi Billy,
Well it has been awhile but we are finally about finished with the outside of our little cottage (now we are starting the inside!) and I remembered that you wanted to see pictures of your post support in action.  As you can see it is perfect and as solid as a rock.  Thank you again for your great product!!
Take care - Scott  

Customer Jeff W. Created a very cool work table with the 4 x 4 post holder. Let us know what you create and we'll post to our site too...

We bought 4 deck posts, had them cut to size at Home Depot, turned them upside down so that there would be detail for the feet, and turned your flanges upside down to fasten the legs to the table. Everything worked out great and the table (8'x2.5') feels
like the Rock of Gibraltar.

Marke A. said: "I ripped down the rails and posts this morning. I had the new rails and posts up in about an hour and a half. Love the flanges!!!!" 

A Few of the more than 60 Amazon Customer Reviews. See more here.

Verified Purchase
Worked well to attractively add support to a pass through post that is solidly anchored below the flooring. I would not trust it to be adequate for any side load if the post were cut flush to the floor. The bottom screws are nicely spaced for solid anchoring but the top screws into the post should be offset more. As it is the two screws on either side of each corner would hit each other about a half to 3/4ths of an inch in. I ended up only use four of the top eight screw holes to avoid this problem.

Jeff --Jackson, MI
Comment  5 of 5 people found this helpful. Was this review helpful to you?  
Verified Purchase
I purchased some of these for the support posts on a deck stairway handrail. The posts and handrail are freestanding with no additional support other than the flange mounted to the deck top and the bottom stair.

After getting everything installed, I was pleasantly surprised at how solid they were. There's no movement on either post.
Comment  5 of 5 people found this helpful. Was this review helpful to you?  
Verified Purchase
I bought 20 of these post flanges for the new deck I'm building. They look great and work good. The only thing about them that I don't like is that only a tapered 4x4 will fit in them. I purchased 16' 4x4s from Lowes and they aren't tapered. Just had to sand the edges on my 4x4s to fit.
Comment  5 of 5 people found this helpful. Was this review helpful to you?  
Verified Purchase
Quick and easy way to install a railing on a preexisting deck. I was worried that because these were plastic they would crack when being installed. They didn't crack and the railing was very stable.
Comment  3 of 3 people found this helpful. Was this review helpful to you? 
Had to sand the bottom 4" of all posts so they will fit. Learned this the hard way, after applying 2 coats of paint. LOL! I will buy these again and have recommend them to my friends.
Verified Purchase
I need to start out by saying that I've never replaced a deck before. After doing some research online, I realized what I should do and what I shouldn't.

My deck is only 12x6, with a small lower level that I will be sanding down and painting soon. I tried to simply follow what the previous homeowners did and replace the lumber piece by piece. This includes the notched 4x4 posts. Huge mistake. After battling with trying to figure out how to notch my own posts, I realized that method is simply not as strong as I

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Other Information:
UPC Code: 721633120124


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