MDI Work Zone Safety Products 
10
//ORIGINAL WINDMASTER® SIGN STANDS//
1.800.521.6776 // www.mditrafficcontrol.com
◆	 Steel base and spring components specially coated to withstand 
240 hours of salt spray.
◆	 Aircraft aluminum alloy legs and uprights, with anti-skid  
rubber leg caps. 
◆	 Adjustable legs for stability on curbs  
or uneven terrain.
◆	 Dual spring base with strong initial tension  
resists twisting and turning of sign  
in high wind gusts.
4860K
For use with roll-up,
aluminum, plywood, plastic 
and aluminum laminate signs. 
BreakAway feature. Rigid and/
or rollup brackets available. 
(brackets sold separately).
4818K
For use with roll-up and rigid,
aluminum, plywood, plastic 
and aluminum laminate signs. 
BreakAway feature. Rigid and/
or rollup brackets available.
(brackets sold separately).
MDI® is proud to offer a full range of sign stands to meet your 
work zone signage needs. Our Original WindMaster® sign stands, 
constructed of steel bases and spring components, deliver the 
quality you have come to rely on. Our WindMaster product line allows 
deployment of your signs at various heights between 12" and 84" 
from ground surface. The entire line is designed to withstand  
strong wind gusts. Models 4818®K and 4860®K feature  
MDI’s BreakAway® system.
 Holds sign 18" from ground
 Holds sign 60" and 84" from ground
* To top of 48" sign without flags. ** Distance from bottom of 48" sign to ground. † 5 ft. only for rigid signs.
3612®DLK
For use with MDI DuraLatch®  
signs, 3-pocket signs and  
MDI Compact® signs. 
Dual spring. Telescoping legs.
4814HDK
For use with MDI DuraLatch 
signs, 3-pocket signs and  
MDI Compact signs. 
Dual spring. Telescoping legs.
 Holds sign 12" from ground
 Holds sign 14" from ground
4814®M-DLK
For use with MDI DuraLatch 
signs, 3-pocket signs and  
MDI Compact signs. 
Dual spring. Telescoping legs. 
Also available in screw-lock 
(4814M-SL) and CamLock® 
(4814CAM).
 Holds sign 14" from ground
Model
Number
Deployed
Height*
Sign
 Height**
Folded Dimensions
(HxWxD)
Weight
(w/o brackets)
Roll-Up Signs
Rigid
Signs
 WindMaster
Springs
MDI Compact
MDI DuraLatch
3612DLK
80"
12"
24¾" X 6½" X 6½"
17 lbs.
◆
◆
––
Dual
4814M-DLK
82"
14"
25" X 6½" X 6½"
21 lbs.
◆
◆
----
Dual
4814HDK
82"
14"
30¼" X 6½" X 6½"
23 lbs
◆
◆
----
Dual
4814M-SL
82"
14"
25" X 6½" X 6½"
25 lbs
◆
◆
----
Dual
4814CAM
82"
14"
28¼" X 6½" X 6½"
25 lbs
◆
◆
----
Dual
4818K
86"
18"
58" X 11" X 8¼"
31 lbs.
----
◆
◆
Dual
4860K
128" & 152"
60" & 84"
84¼" X 11" X 8¼"
44 lbs.
----
◆
◆†
Dual 

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