This is a steel joint that was previously used - the part is no longer carried
See PN 2176 - Resin Upper Joint for 8"
or
See PN 2276 - Resin Lower Joint for 8"
This part fits on 7" Steel, 8" Steel or 8" Resin frames. This is an older style of joint which utilizes a 5/8 of an inch rail (or track). It measures 5" 5/8" wide, 3" 3/4" deep and 3/4" tall.

