For 20-35 HP (1991& Up)
Length: 2″
Width: 1-5/8″
Thickness: 1/4″
Mounting Hole: 1/4″.
EMP Aluminum anodes conform to Mil-Spec A-24779(SH)

also crosses with:
Canada Metals CM434029A
Performance Metals 00394A
GLM 12697
Technoseal 00914-1