4 inch Round 56 inch Yellow Smooth Post Sleeves
★★★★★ 5.0 on Google (4 reviews) · See reviews- ½″ thick HDPE — made in the USA, won't rust, crack, dent, or fade
- Smooth, clean aesthetic — professional look for retail & customer-facing areas
- UV inhibitors built in — withstands -30°F to 130°F, zero annual maintenance
- OSHA 1910.144 compliant — slides over existing post, trim to fit
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Product Overview
Technical Specifications
4 inch Round 56 inch Yellow Smooth Post Sleeves — Smooth Bollard Post Cover Sleeve
| SKU | A1735E |
|---|---|
| Diameter | 4 inch round |
| Inside Diameter | 4.750 inches |
| Outside Diameter | 5.250 inches |
| Height | 56 inches |
| Material | UV-Stabilized LDPE (Low-Density Polyethylene) |
| Color | Yellow |
| Finish | Smooth |
| Weight | 6 lbs |
| Fits Post Size | 4-inch schedule 40 pipe (4.500" OD) |
| Manufacturer | Eagle Manufacturing |
Compare Bollard Cover Options
Choose the right bollard cover style, size, and color for your facility
Ribbed Bollard Covers vs Smooth Post Sleeves
| Feature | Ribbed (Fluted) Covers | Smooth Post SleevesThis Product |
|---|---|---|
| Surface Profile | Corrugated / fluted exterior | Flat, clean exterior |
| Material | ½″ HDPE (high-density polyethylene) | UV-stabilized smooth vinyl (LDPE) |
| Impact Resistance | ✓ High — ribs flex & absorb impact | Moderate — standard protection |
| Appearance | Industrial / utility look | Clean, sleek, professional |
| Diameters Available | 4″, 6″, 8″ | 4″, 6″, 8″ |
| Heights Available | 56″ standard + 72″ extended (6″ & 8″) | 56″ (4″/6″) & 57″ (8″) standard only |
| Colors Available | Yellow, Red, Blue (+ more available) | Yellow, Red |
| UV Resistant? | ✓ Yes — UV inhibitors | ✓ Yes — UV stabilized |
| Weather Range | -30°F to 130°F | -30°F to 130°F |
| Trimmable? | ✓ Yes — cut with standard saw | ✓ Yes — cut with standard saw |
| Installation | Slide over post — no tools needed | Slide over post — no tools needed |
| Maintenance | None — won’t rust, crack, or dent | None — won’t rust, crack, or fade |
| OSHA Compliant? | ✓ Yellow/Red: OSHA 1910.144 | ✓ Yellow/Red: OSHA 1910.144 |
| Best For | Warehouses, loading docks, industrial & high-traffic areas | Retail, office parks, storefronts & customer-facing areas |
| Price Range | $87.66 – $152.24 | $104.99 – $127.04 |
| Free Shipping? | ✓ Yes — Continental US | ✓ Yes — Continental US |
| Shop | View Ribbed Covers → | ✓ You're viewing this |
Bollard Cover Sizes & Pricing at a Glance
| Diameter | Height | Inside Diameter | Ribbed Price | Smooth Price |
|---|---|---|---|---|
| 4″ | 56″ | 4.750″ | $87.66 | $104.99 |
| 6″ | 56″ | 6.625″ | $125.99 | $104.99 |
| 6″ | 72″ | 6.625″ | $136.49 | — |
| 8″ | 56″ / 57″ | 8.625″ | $129.14 | $127.04 |
| 8″ | 72″ | 8.625″ | $152.24 | — |
Expert Insights
4 inch Round 56 inch Yellow Smooth Post Sleeves | Industrial Spill Containment
Wholesale & B2B Information
4 inch Round 56 inch Yellow Smooth Post Sleeves is used by manufacturing plants, maintenance departments, fleet operations for bollard protection and facility safety. Volume pricing available. Free shipping to the lower 48 states.
Frequently Asked Questions
4 inch Round 56 inch Yellow Smooth Post Sleeves
What size post does this 4-inch yellow sleeve fit?
It fits standard 4-inch schedule 40 pipe with a 4.500-inch OD. The sleeve's inside diameter is 4.750 inches.
How do I install this smooth post sleeve?
Simply slide it over the top of the bollard — no tools, hardware, or adhesives needed.
Will the yellow color fade in sunlight over time?
No. The UV-stabilized LDPE material is engineered to resist fading, cracking, and weathering outdoors.
Is this sleeve available in other colors or sizes?
Yes. This line is available in red and yellow, in 4-inch, 6-inch, and 8-inch diameters.
Why choose smooth post sleeves over ribbed covers?
Smooth post sleeves provide a clean, sleek, professional appearance — ideal for retail storefronts, office parks, shopping centers, and customer-facing environments where aesthetics matter. Ribbed covers are better for high-traffic industrial environments where maximum impact resistance is the priority. Both styles offer the same weather resistance and no-maintenance HDPE construction.
Why is the 8-inch smooth post sleeve 57 inches tall instead of 56?
The 8-inch diameter smooth post sleeve is manufactured at 57 inches to accommodate the slightly different tooling and mold dimensions for the larger diameter. Functionally, the 1-inch height difference is negligible and the sleeve can still be trimmed to any shorter height with a standard saw for a perfect fit.
Are extended 72-inch heights available in smooth post sleeves?
Extended 72-inch heights are currently only available in ribbed style for 6-inch and 8-inch diameters. If you need a taller cover with a smooth appearance, contact us at [email protected] or call (800) 869-9633 to discuss custom options. View our 72-inch ribbed covers as an alternative.
Why Customers Choose AbsorbentsOnline
Facilities, field crews and government buyers have ordered from us since 1985.
- 5.0 on Google See our reviews
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Family-owned since 1985
-
Free shipping to the lower 48 states
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Ships from the warehouse nearest you Faster delivery, lower freight costs
- Real experts at (800) 869-9633
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Cross-Reference Guide
This 4-inch yellow smooth post sleeve is part of a complete line of smooth vinyl bollard covers. Browse related sizes and colors below.
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- {"sku"=>"TBD", "title"=>"4 inch Round 56 inch Red Smooth Post Sleeve", "product_id"=>8386294251699}
- {"sku"=>"TBD", "title"=>"6 inch Round 56 inch Yellow Smooth Post Sleeve", "product_id"=>8386294153395}
- {"sku"=>"TBD", "title"=>"6 inch Round 56 inch Red Smooth Post Sleeve", "product_id"=>8386294284467}
- {"sku"=>"TBD", "title"=>"8 inch Round 57 inch Yellow Smooth Post Sleeve", "product_id"=>8386294218931}
- {"sku"=>"TBD", "title"=>"8 inch Round 57 inch Red Smooth Post Sleeve", "product_id"=>8386294317235}
All smooth post sleeves feature UV-stabilized LDPE construction and require no tools for installation. Measure your existing post OD before ordering to ensure the correct fit.
