SKU:SEN-ADR-P-39-55
SENMIT 39-Inch Surface-Mount Aluminum Deck Railing Post, 55 × 55 mm
SENMIT 39-Inch Surface-Mount Aluminum Deck Railing Post, 55 × 55 mm
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Need help planning your railing layout? Request a project quote.
About the images: Product and lifestyle images are AI-generated visualizations, not photographs of completed installations. Refer to the product details and selected option for dimensions and included components.
SENMIT aluminum railing post
A clean finish at every post.
Define your deck layout with a 39-inch square aluminum post and an included low-profile decorative base cover.
Post and decorative base cover included. Railing panels are not included.
Three dimensions to plan around.
Keep post dimensions and cover dimensions distinct when planning the mounting area and coordinating your railing layout.
- Post height
- 39 in
- Square post profile
- 55 × 55 mm
- Decorative cover outer size
- 100 × 100 mm
- Mounting type
- Surface mount
Cover size is not plate size. The 100 × 100 mm measurement describes the decorative cover, not the mounting plate or fixing-hole spacing.
The detail at deck level.
The included flat-top cover conceals the mounting plate and fixings, giving the base a simple, coordinated appearance.
Low profile. Square outline.
A 100 × 100 mm outer cover surrounds the 55 × 55 mm post. The cover provides the finished appearance; the fixing method must suit the actual supporting structure.
Coordinate the post with the railing.
The matching vertical-picket family uses 36-inch panels, 50 × 30 mm top rails and 40 × 30 mm bottom rails.
Plan the installation before ordering.
- Map the railing runsMeasure each level run and stair transition. Mark corners, openings and proposed post positions.
- Identify the supporting structureConfirm the mounting surface and the structure that will receive the surface-mount fixings.
- Match the panel connectionsReview panel lengths, connection points and stair-specific requirements before finalizing post quantities.
- Confirm the remaining componentsCheck which caps, brackets, screws or anchors are supplied and which are needed separately. Have project-specific installation requirements reviewed.
Questions about your post selection?
Is the decorative base cover included?
Yes. This listing includes the post and its low-profile, flat-top decorative base cover. The cover measures 100 × 100 mm externally. Railing panels are not included.
Is 100 × 100 mm the mounting plate size?
No. It is the decorative cover's outer size. Confirm the mounting plate dimensions, hole positions and suitable fixings separately.
Why is the post 39 inches and the panel 36 inches?
These are the dimensions of two different components in the railing family: a 39-inch post and a separate 36-inch panel. Confirm the complete installed layout for your project.
How many posts will my layout need?
Post quantity depends on the panel layout, corners, openings, stair transitions and connection requirements. Send a measured sketch to SENMIT for configuration help.
Share your layout with SENMIT.
Send your measurements, photos or a sketch, plus the mounting-surface details. We can help review post positions and the components to confirm.
Request a Quote
Product details
Product details
SENMIT aluminum railing post
A clean finish at every post.
Define your deck layout with a 39-inch square aluminum post and an included low-profile decorative base cover.
Post and decorative base cover included. Railing panels are not included.
Three dimensions to plan around.
Keep post dimensions and cover dimensions distinct when planning the mounting area and coordinating your railing layout.
- Post height
- 39 in
- Square post profile
- 55 × 55 mm
- Decorative cover outer size
- 100 × 100 mm
- Mounting type
- Surface mount
Cover size is not plate size. The 100 × 100 mm measurement describes the decorative cover, not the mounting plate or fixing-hole spacing.
The detail at deck level.
The included flat-top cover conceals the mounting plate and fixings, giving the base a simple, coordinated appearance.
Low profile. Square outline.
A 100 × 100 mm outer cover surrounds the 55 × 55 mm post. The cover provides the finished appearance; the fixing method must suit the actual supporting structure.
Coordinate the post with the railing.
The matching vertical-picket family uses 36-inch panels, 50 × 30 mm top rails and 40 × 30 mm bottom rails.
Plan the installation before ordering.
- Map the railing runsMeasure each level run and stair transition. Mark corners, openings and proposed post positions.
- Identify the supporting structureConfirm the mounting surface and the structure that will receive the surface-mount fixings.
- Match the panel connectionsReview panel lengths, connection points and stair-specific requirements before finalizing post quantities.
- Confirm the remaining componentsCheck which caps, brackets, screws or anchors are supplied and which are needed separately. Have project-specific installation requirements reviewed.
Questions about your post selection?
Is the decorative base cover included?
Yes. This listing includes the post and its low-profile, flat-top decorative base cover. The cover measures 100 × 100 mm externally. Railing panels are not included.
Is 100 × 100 mm the mounting plate size?
No. It is the decorative cover's outer size. Confirm the mounting plate dimensions, hole positions and suitable fixings separately.
Why is the post 39 inches and the panel 36 inches?
These are the dimensions of two different components in the railing family: a 39-inch post and a separate 36-inch panel. Confirm the complete installed layout for your project.
How many posts will my layout need?
Post quantity depends on the panel layout, corners, openings, stair transitions and connection requirements. Send a measured sketch to SENMIT for configuration help.
Share your layout with SENMIT.
Send your measurements, photos or a sketch, plus the mounting-surface details. We can help review post positions and the components to confirm.
Request a Quote
Shipping & Returns
Shipping & Returns
In-stock aluminum railing products: estimated delivery within 5–7 days after ordering. You may request a return or exchange within 30 days of delivery, subject to the store's return conditions.
Read the Shipping Policy and Refund Policy for details, including return authorization, restocking charges and shipping costs.
