16mm Inactive Top Extension, 25mm Shootbolt Throw, 19.29" Length

In-Active Top Shootbolt Extension, used on 3 piece Inactive Version Shootbolts 

Extension Length: 19.25

Maximum Cutoff: 4.5 inch

Number of Screws: 3

Overall Length w/ 36 handle Height: 69.76 -73.70 Doors (if used as top extension)

NOTE 1:

This is also used on the adjustable handle height active shootbolt #3664566 (35/92) 

Use Inactive (IA) Top or Bottom Shootbolt extension for Adjustable Handle Height versions

Note 2: 

Inactive and Active shootbolt extensions work differently and are NOT interchangeable. 

Inactive shootbolts Push to Extend Bolt

Active shootbolts Pull to Extend bolt