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Product Overview

The 4-Inch Round 56-Inch Red Smooth Post Sleeve (SKU: A1735RE) is a decorative bollard cover that slides over existing 4-inch steel posts to enhance visibility and mark restricted or hazardous areas with a bold red color. Manufactured by Eagle Manufacturing from UV-stabilized LDPE (low-density polyethylene), this sleeve features a smooth finish that resists fading, cracking, and corrosion even in harsh outdoor conditions. With an inside diameter of 4.750 inches and an outside diameter of 5.250 inches, it stands 56 inches tall and weighs approximately 6 lbs. The red color is ideal for identifying fire safety zones, danger areas, and emergency equipment locations per OSHA color-coding standards.

Technical Specifications

4 inch Round 56 inch Red Smooth Post Sleeves — Smooth Bollard Post Cover Sleeve

SKU A1735RE
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 Red
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

Ribbed vs Smooth Bollard Cover Comparison
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

Bollard Cover Size and Price Chart
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

Before ordering, measure the outside diameter (OD) of your existing steel post — this 4-inch sleeve has a 4.750-inch inside diameter sized to fit standard 4-inch schedule 40 pipe with a snug, secure fit. Installation requires no tools or fasteners: simply lift the sleeve and slide it down over the top of the bollard until it reaches ground level. The red color follows OSHA safety color standards for marking fire protection equipment, danger zones, and stop/emergency areas, making it a practical choice for fire lanes, hydrant markers, and restricted zones. Built from UV-stabilized LDPE, this sleeve maintains its vibrant red color and structural integrity through prolonged sun exposure, rain, snow, and temperature swings.
Travis Zdrazil PCI Products — 40 Years in Industrial Spill Containment & Safety

4 inch Round 56 inch Red Smooth Post Sleeves | Industrial Spill Containment

Wholesale & B2B Information

4 inch Round 56 inch Red 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 Red Smooth Post Sleeves

What size post does this 4-inch red 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.

Do I need any tools to install this sleeve?

No. Just slide it over the top of the bollard — no tools, adhesives, or hardware required.

Will the red color fade after prolonged sun exposure?

No. UV-stabilized LDPE resists fading, cracking, and weathering for long-lasting outdoor performance.

What does the red color signify per OSHA standards?

Red marks fire protection equipment, danger zones, stop signals, and emergency shutoff areas.

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.

Cross-Reference Guide

This 4-inch red smooth post sleeve is part of a complete line of smooth vinyl bollard covers. Browse related sizes and colors below.

  • {"sku"=>"A1735E", "title"=>"4 inch Round 56 inch Yellow Smooth Post Sleeve", "product_id"=>8386294087859}
  • {"sku"=>"A1735RE", "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.