Top 9 3×3 Post Base – Decking Railings

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1. Contractor Handrail Deck Railing


Contractor Deck Railing Aluminum 3x3 Post Base Cover, Hammered Black, Low Profile

Contractor Handrail Deck Railing #ad - Madden industries premium Deck Railing Product - All Aluminum Construction. Maintenance free - industrial Grade Powder Coated Finish - 25 Year Finish Warranty. Fits our 3 in. Mounting flange. Inch tall post kits. For use with one-piece post kits. X 5 in. Hides bolt connection at floor, fits over our our 5 in. X 3 in. Square posts with the following heights - 38 in. 44 in. And 50 in.
BrandContractor Handrail Deck Railing #ad
ManufacturerMadden Industries #ad
Height3 Inches
Length5 Inches
Weight1 Pounds
Width5 Inches
Part NumberCHBCHB-LP

2. Design House


Design House 502211 Post Top Light, Black, Pier Base, 3.5-in. Adapter

Design House #ad - Durable steel with black finish is maintenance free and does not rust or chip. Will not support a light post, only for mounting fixtures. Easy to install – mounts to piers, posts, columns, decks and more.75-inch diameter base for outdoor lighting fixtures. 10-year limited. Mount for post top lights. Standard 2.
BrandDesign House #ad
ManufacturerHI- Design House #ad
Height2.25 Inches
Length3.5 Inches
Weight0.72 Pounds
Width3.5 Inches
Part Number588004
Warranty10-year limited warranty.

3. Simpson Strong-Tie


4 x 4 x 5 inches, Simpson Strong-Tie TV207230 Steel Retrofit STL Post Base

Simpson Strong-Tie #ad - Durable steel construction. Manufactured in China. The product is a Retrofit STL Post Base. Country of Origin: China.
BrandSimpson Strong-Tie #ad
ManufacturerSimpson Strong TIE #ad
Height5 Inches
Length4 Inches
Weight0.9 Pounds
Width4 Inches
Part NumberTV207230

4. Myard


Black, Myard PNP114040 4x4 Actual 3.5x3.5 Inches Post Base Cover Skirt Flange with Screws for Deck Porch Handrail Railing Support Trim Anchor Qty 1

Myard #ad - Clean contemporary style. Post height limit: 60" 5-feet, NOT for roof support. Search "pnp 115445" and "pnp111902". Perfect for deck supports, porch railing, hand rails and post holders. Please read full description before order.

12 long screws vertically to deck floor board. Thicker & higher post base bottom for better structural strength on decks. Also, can be used as table leg / mailbox post support brackets. Stainless steel 304 screws are included: 8 short screws installed horizontally to post. Patented utility+design. Fits a nominal standard 4"x 4" post actual 3.

5"x 3. 5" dry post on market. Made from paintable durable high-strength nylon + Anti-UV + FRP Fiber Reinforced Plastic. No fading, aging, and weakening from sun exposure. Sanding / trimming may be required depending on post type and little size error. Re-designed for better looking. Uv-resistant. Use with myard railing Connectors and Post Caps for match looking.
BrandMyard #ad
ManufacturerMyard #ad
Height4.13 Inches
Length7.13 Inches
Weight1 Pounds
Width7.13 Inches
Part NumberPNP114040

5. USP Structural Connectors


4 by 4, USP Structural Connectors CPB44 Composite Post Base

USP Structural Connectors #ad - Composite construction for extreme durability. For use with 4X4 posts. Provides code required 1 inch stand-off from concrete. Comparable to CPS4. Made in the USA.
BrandUSP Structural Connectors #ad
ManufacturerUSP Structural Connectors #ad
Height1 Inches
Length4 Inches
Weight0.08 Pounds
Width4 Inches
Part NumberCPB44



11'' x 4.3'' x 6, Black, ADLER Fence Post Base Brackets Heavy Duty Steel Powder-Coated Anchor Support Use for 4x4 Wood

ADLER #ad - Screws are not included. Made from 13 gauge steel for optimum strength. Easy to install in concrete with 04 inch on box body. Powder coated in black, it is unobtrusive, as well as durable and rust resistant. 5 inch diameter anchors, 8 holesφ=0 Post bases do not provide adequate resistance to prevent rotation about the base and therefore are not recommended for non-top-supported installations such as fences or unbraced carports. Allows easy installation of 4x4 wood posts on existing concrete.
BrandADLER #ad
ManufacturerADLER #ad
Height5.5 Inches
Length10.5 Inches
Weight4.2 Pounds
Width4 Inches
ModelFence Post Base Brackets

7. Weatherables


Weatherables | AWPT-WRAPTRIM4PC-ADJ | 4-Piece Vinyl Post Skirt | Fits Posts Between 3.5 Inch to 6.5 Inch Square | White | Superior Durability

Weatherables #ad - Give your post an elegant and finished look with the 4-piece adjustable decorative post skirt. Adjustable skirt size | corner radius:. 256 in.

Color: White. Manufactured from premium quality, durable PVC vinyl | Maintenance Free: Set it and forget it. Total height: 1. 226 in. Will not fade, discolor or warp | uv resistant | water resistant | Perfect for a fence, deck, or mailbox post | This is a 4-piece skirt and can be adjusted for size of posts with pre-marked cut lines. Designed to to fit around true 3, 6 and 6. 5 inch square posts | simply cut according to post size, 5, 3. 5, 4, then slide the 4 pieces together around the bottom of the post | Made in the U. S. A. Limited lifetime warranty.
BrandWeatherables #ad
ManufacturerWEATHERABLES #ad

8. Mail Boss


Mail Boss, Black 7155 Surface Mount Base Plate

Mail Boss #ad - Features durable powder-coated finish. Accommodates 1/4 inch fasteners, securing to a variety of mounting surfaces. Made of 10-gauge electrogalvanized welded steel. Includes necessary hardware & clear instructions. Used with surface mount Post for mounting onto a 4-8" curb or sidewalk. Mail boss mailbox and post not included.
BrandMail Boss #ad
ManufacturerMail Boss #ad
Height6.5 Inches
Length8.75 Inches
Weight6 Pounds
Width8.75 Inches
Part Number7155
WarrantyLimited Lifetime Warranty Against Manufacturer Defects

9. Simpson Strong-Tie


Simpson Strong Tie FPBB44 Black Powder-Coated 12-Gauge E-Z Base

Simpson Strong-Tie #ad - Easy to install in concrete with 1/2 in. Diameter anchors. Made from 12 gauge steel. Post bases do not provide adequate resistance to prevent rotation about the base and therefore are not recommended for non-top-supported installations such as fences or unbraced carports. Allows easy installation of 4x4 wood posts on existing concrete. Hdg lag screws. Black powder-coat. Sds screws or 1/4 in. Install with 1/4 in.
BrandSimpson Strong-Tie #ad
ManufacturerSimpson Strong Tie #ad
Height6.83 Inches
Length3.83 Inches
Weight2.62 Pounds
Width5.6 Inches
Part NumberFPBB44