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Type III OM3-L Left Side Object Marker Warning Sign
Type III OM3-L Left Side Object Marker Warning Sign
Item Description:
Type III OM3-L Left Side Object Marker Warning Sign
Part Code:
RW-OM3-L Series
Price: (each)
$21.95 (6+ pieces)
$19.95 (12 or more)
Average Rating:

Info & Usage Specs


Heavy duty alodized aluminum construction makes this sign durable & fit for long term exterior use, will not rust.


Laminated with 3M Engineer Grade Prismatic (EGP) reflective sheeting for high visibility both day & night.  For MUTCD compliance, upgrade to 3M High Intensity Prismatic (HIA) for an even brighter, longer optimum reflective performance!


Pre-punched holes at center top/bottom for fast & easy mounting to our U-channel posts.

  • Type III object OM3 Series (hazard) markers are used to alert & warn road users of an approaching obstruction that has been marked within or adjacent to the roadway.


Size/in. 6 x 24
Weight 2lbs
Graphics UV Ink Droplets
Color Black
Face Material: Yellow 3M (EGP)
Alum Panel/Gauge & Alloy .080"/5052-H38
Corners 1.5" Radius
Mounting 3/8" holes
Type I Reflectivity (EGP) 3M Reflectivity Bulb
Optimum Performance/yrs.
Data Product Bulletins & Notes

Street Sign USA 12 x 18 MUTCD Square Sign Shape 

Size A B C D E
6" x 24" 6" 24" 1.5" 15" 1.5"
10" x 30" 10" 30" 3" 24" 1.5"
12" x 36" 12" 36" 3" 30" 1.875"


Additional sizes & reflectivity level are available for this item.  Please make your selection at bottom of page.


Size Options: 

Additional Size/in. 10 x 30 12 x 36
Weight 3lbs 4lbs



Reflective Upgrade For All Sign Sizes:


3M Reflectivity Bulb3M Reflectivity Bulb Type III High Intensity Prismatic (HIA)



Reflective Upgrade 3M (HIA)
Optimum Performance/yrs.
Reflectivity Level 3M Reflectivity Bulb3M Reflectivity Bulb
MUTCD Compliant a
Additional Lead Time 2-3 days

Refer to MUTCD Table 2A-3 on minimum retroreflectivity levels.



Street Sign USA Color Wheel Questions about the various levels of brightness?  Learn more by viewing our color reflectivity chart.


D.O.T. Compliance Shipping

This sign has been specified to meet the U.S. DOT Federal Highway Administration's MUTCD standards.

 This sign is listed in Chapter 2C-13 of the MUTCD.  To learn more on this and other Object Markers, click here



This item normally ships within 5-7 business days!


Please select the size of your sign
Please select the reflectivity level of your sign
Your Price:
Type III OM3-L Left Side Object Marker Warning Sign - RW-OM3-L Series. Fast shipping | Made in the USA | Order your Type III OM3-L Left Side Object Marker Warning Sign today.
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