13" MASSH-400 Slip Base Top for 4" Square (SB13-400SQR-G)
MASSH-400
The MASSH-400 structure is a MASH-compliant ground-mounted slip base sign assembly.
Xcessories Squared manufactures the MASH-16-compliant crash-tested MASSH-400 multi-directionally activated sign support hardware system. It is designed to be used in place of several W-beam ground-mounted sign structures. It can be custom cut to size in your shop or at the roadside. MASSH-400 is 0˚ full-matrix crash tested as a two-leg sign post structure. It contains multi-directional hinges on multi-leg installations to help protect the sign panels.
Quick and Safe Installation
MASSH-400 is much quicker to install than a standard W-beam structure, which helps improve safety and reduce risks. It can also be immediately reinstalled if impacted.
Wind Charts
90 MPH Single Post
| Sign Height | 4' Sign Width | 6' Sign Width | 8' Sign Width | 10' Sign Width |
|---|---|---|---|---|
| 14' | 18 | |||
| 12' | 20 | 14 | ||
| 10' | 23 | 17 | ||
| 8' | 27 | 20 | 16 | |
| 6' | 28 | 25 | 20 | 17 |
| 4' | 28 | 28 | 26 | 23 |
| 2' | 28 | 28 | 28 | 28 |
90 MPH Two Post
| 4' Sign Width | 6' Sign Width | 8' Sign Width | 10' Sign Width | 12' Sign Width | 14' Sign Width | |
|---|---|---|---|---|---|---|
| 14' Sign Height | 23 | |||||
| 12' Sign Height | 28 | |||||
| 10' Sign Height | 28 | 28 | ||||
| 8' Sign Height | 28 | 28 | 27 | 23 | ||
| 6' Sign Height | 28 | 28 | 28 | 28 | 25 | 22 |
| 4' Sign Height | 28 | 28 | 28 | 28 | 28 | 28 |
| 2' Sign Height | 28 | 28 | 28 | 28 | 28 | 28 |
Max. centroid heights in feet
To get additional recommendations including those with three, four and five posts, see the full Wind Load Capacities charts.
Product Details
Regulatory Compliance: MASH-16 Compliant (FHWA Letter SS-180 & SS-182)
Assemblies
Looking for placement flexibility in your support system?
Check out our MASH-16 compliant Adjust-A-Sign aluminum sign braces.