THIS IS FOR (QTY 1) MDF 15 INCH SPEAKER RING

INSIDE DIAMITER --- 13 3/4 INCHES

OUTSIDE DIAMITER ---- 16 3/16  INCHES

THICKNESS

ALL RINGS ARE MACHINED FOR PERFECT ACCURACY 

PLEASE CONTACT US FOR CUSTOM CUT RINGS & SIZES

WE HAVE MULTIPLE MDF RING SIZES & STYLES

THESE ARE GREAT FOR BUILDING FIBERGLASS BOXES, CUSTOM SPACERS

---- 3/4  INCH