This is the rarer version with the 43″ long fence (the typical/normal version is only 33-1/2″)… The additional length provides more stability and support when ripping material through your saw. NOTE – as shown in the photo, it is missing the plastic “glassing” indicator… I personally do not find them accurate enough. Fits a Unisaw Fence that is. 3.4 inches wide. 1-3/4 tall on the front/narrow end. About 2 tall on the back/wider end. For even more table saw parts!