---
title: Calculating Sash Travel
description: Method of integrate calculation restricted sash travel for cord hung sash windows
---

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# Calculating Sash Travel

## For cord hung sash windows, learn how restricted sash travel is calculated in integrate.

### **Key Points: Sash Travel Calculations**

![](https://knowledgehub.endtoendit.com/hs-fs/hubfs/image-png-Dec-04-2024-12-09-37-5916-PM.png?width=670&height=561&name=image-png-Dec-04-2024-12-09-37-5916-PM.png)

 Tolerance = 50

 

**1. Maximum sash travel**

MaxSashTravel = OverallSashHeight - SashHeight

 

**2. Maximum lead travel**

MaxLeadTravel = OverallSashHeight - 150 - Tolerance

 

**3. Lead height**

LeadHeight = SashWeight \* (LeadHeight  Per lb / 2)

 

**4. Calculated sash travel**

CalculatedSashTravel = MaxLeadTravel - LeadHeight

 

**5. Percentage opening**

Opening % = 100 \* (CalculatedSashTravel / MaxSashTravel)

 

 

| **Lead Height Per Lb** | **Lead Bar** | **Sash Thickness** |
| --- | --- | --- |
| 44.7 | 1 1/4" | ... - 38mm |
| 29.7 | 1 1/2" | 39mm - 44mm |
| 22.4 | 1 1/3" | 45mm - 50mm |
| 16.1 | 2" | 51mm - ... |

 

 

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