NuIth Speaker Spacer Adapter Ring - 4 Inch

0.43 inch depth extenders: With 4” speaker subwoofer spacer rings, you can install the speakers you want adding extra depth, good for DIY Audio modification project. 4 inch Speaker Mounting Plate: Inner Diameter: 95mm / 3.7""; Outer Diameter: 135mm/ 5.3""; Thickness: 11mm/0.43""; universal spacer ring works with most 4 inch speakers, please allow 1-2mm error due to manual measurement. 4 inch plastic speaker spacer adapter ring allows for replacement speakers to be installed into the original aperture of your vehicle stereo system. Easy to Install: Universal 4 inch speaker spacer utilizes existing vehicle mounting points, and requires no cutting or drilling. 4 inch car door speaker bracket made of durable ABS plastic and good craftsmanship for durability and practicality