Spec Sheet
4" Stainless Steel Internal Locking Removable Bollard with Embedment Sleeve (36" Height)
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Over 50 years in the industry, demonstrating reliability.
Serving customers across all 50 states.
Products designed for heavy-duty use.
30 Days Return Policy*
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Product Overview
The 4" Stainless Steel Internal Locking Removable Bollard is a complete removable bollard with the lock hidden below grade. The locking mechanism engages inside the embedment sleeve, so there is no padlock to cut and nothing exposed to tamper with. The key goes in at waist height on the post, which makes it easy to use without bending down.
When you pull the post, a heavy-duty locking lid closes over the sleeve. The opening stays smooth and safe for traffic until you drop the bollard back in. Many customers mix these in with fixed bollards to build a secure perimeter that still has a controlled way in.
Review the Product Details and SKU options below to match the top style you want. The embedment sleeve is included.
Key Features
- Complete kit. Bollard post, embedment sleeve, and locking lid ship together.
- Type 304 stainless steel, polished to a #4 finish. Type 316 available for harsher environments.
- 36" above grade, 12" below grade in the sleeve.
- Internal lock engages below grade. Nearly impossible to remove without the key.
- Waist-high key access. No kneeling at the base.
- Locking lid covers the sleeve when the post is out, so the lane stays drivable.
- Dome, flat, or sloped top.
Ideal For
Choose this bollard if you need:
- Access points where a visible padlock is not secure enough.
- Storefronts, campuses, and facilities that open a lane on a schedule.
- Perimeters that pair fixed bollards with a few removable posts.
Not Ideal For
Not ideal where the post never needs to come out. A fixed baseplate bollard is simpler and costs less. This bollard is not crash rated. If you need a tested vehicle barrier, see our crash rated bollards.
Product Details
| Brand | S4 Bollards |
| Product Type | Internal Locking Removable Bollard |
| Material | Type 304 stainless steel, polished to a #4 finish. Type 316 available for harsher environments. |
| Pipe Diameter | 4" |
| Outer Diameter | 4.5" |
| Height Above Grade | 36" |
| Embedment Depth | 12" |
| Wall Thickness | 0.237" - Schedule 40 |
| Weight | 44 lbs. |
| Color | Stainless Steel |
| Top Style | Dome, Flat, or Slope (choose SKU) |
| Includes | Bollard post, embedment sleeve, locking lid, and key. |
Available SKU Options
| SKU | Cap Type |
| RSSV4040D+ESV40 | Dome |
| RSSV4040F+ESV40 | Flat |
| RSSV4040S+ESV40 | Slope |
Frequently Asked Questions
Is the embedment sleeve included?
Yes. This listing is the complete internal locking removable bollard: post, in-ground sleeve, and locking lid.
How is this different from a padlock removable bollard?
The lock sits below grade inside the sleeve instead of on an exposed hinged lid. It is harder to defeat and looks cleaner, which is why it costs more.
What should I check before ordering?
Confirm you can core a hole for the sleeve in concrete, check local utility locates before digging, and pick the top style that matches your other bollards.
Return Policy
You can return unused or defective products up to 30 days from the date of order. Some product returns may be subject to restocking fees. Proof of Purchase will be required if we cannot verify your order information. Unless the product is defective or damaged in transit, the customer is responsible for return shipment costs.
Defective or Damaged Products
All shipments received must be immediately inspected for damage. If your order shipped on a freight carrier, any damage needs to be noted on the Freight Receipt before signing for the delivery. An exchange or refund will be provided at no additional cost. If damage is due to misuse or regular wear of the product, the return will be denied.
Order Cancellation
If you need to cancel your order for any reason, please contact us immediately. If the order is canceled prior to shipping, you will be refunded in full. Certain products that are manufactured to order cannot be canceled after the manufacturing process has started.