STANDARD RING SIZES CAN BE FOUND BELOW - MDF Rings can be used for numerous applications, ideal for spacing door speakers and fabricating fibreglass boot builds. Available in these standard sizes as shown below . . any size rings can be CNC cut to order.

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 Part No : SP41

 Speaker Size : 4 in (10cm)

 Thickness (mm): 18mm

 Dimension A (mm): 93

 Dimension B (mm): 140

 Price Per Pair : £10.99
10cm MDF Spacer Ring

 Part No : SP51

 Speaker Size : 5 in (13cm)

 Thickness (mm): 18mm

 Dimension A (mm): 116

 Dimension B (mm): 160

 Price Per Pair : £11.99
13cm MDF Spacer Ring

 Part No : SP160

 Speaker Size : 6 in (16cm)

 Thickness (mm): 18mm

 Dimension A (mm): 125

 Dimension B (mm): 170

 Price Per Pair : £11.99
16cm MDF Spacer Ring

 Part No : SP17

 Speaker Size : 6.5 in (17cm)

 Thickness (mm): 18mm

 Dimension A (mm): 142

 Dimension B (mm): 175

 Price Per Pair : £12.99
17cm MDF Spacer Ring

 Part No : SP61

 Speaker Size : 6.5 in (17cm)

 Thickness (mm): 18mm

 Dimension A (mm): 144

 Dimension B (mm): 180

 Price Per Pair : £12.99
17cm MDF Spacer Ring

 Part No : SP62

 Speaker Size : 6.5 in (17cm)

 Thickness (mm): 18mm

 Dimension A (mm): 146

 Dimension B (mm): 210

 Price Per Pair : £12.99
17cm MDF Spacer Ring

 Part No : SP200

 Speaker Size : 8 in (20cm)

 Thickness (mm): 18mm

 Dimension A (mm): 186

 Dimension B (mm): 230

 Price Per Pair : £13.99
20cm MDF Spacer Ring

 Part No : SP250

 Speaker Size : 10 in (25cm)

 Thickness (mm): 18mm

 Dimension A (mm): 232

 Dimension B (mm): 272

 Price Per Pair : £14.99
25cm MDF Spacer Ring

 Part No : SP300

 Speaker Size : 12 in (30cm)

 Thickness (mm): 18mm

 Dimension A (mm): 280

 Dimension B (mm): 320

 Price Per Pair : £15.99
30cm MDF Spacer Ring

 Part No : SP380

 Speaker Size : 15 in (38cm)

 Thickness (mm): 18mm

 Dimension A (mm): 358

 Dimension B (mm): 400

 Price Per Pair : £24.99
38cm MDF Spacer Ring

 Part No : SP69

 Speaker Size : 6x9 inch

 Thickness (mm): 18mm

 Dimension A (mm): 204

 Dimension B (mm): 270

 Price Per Pair : £14.99
6x9 MDF Spacer Ring

 Part No : SP69SQ

 Speaker Size : 6x9in Square

 Thickness (mm): 18mm

 Dimension A (mm): 190

 Dimension B (mm): 254

 Price Per Pair : £14.99
8in Square MDF Spacer Ring

 Part No : SP8SQ

 Speaker Size : 8 in Square

 Thickness (mm): 18mm

 Dimension A (mm): 193 x 193

 Dimension B (mm): 230 x 230

 Price Per Pair : £14.99
8in Square MDF Spacer Ring

 Part No : SP10SQ

 Speaker Size : 10 in Square

 Thickness (mm): 18mm

 Dimension A (mm): 241 x 241

 Dimension B (mm): 271 x 271

 Price Per Pair : £16.99
10in Square MDF Spacer Ring

 Part No : SP12SQ

 Speaker Size : 12 in Square

 Thickness (mm): 18mm

 Dimension A (mm): 285 x 285

 Dimension B (mm): 320 x 320

 Price Per Pair : £18.99
12in Square MDF Spacer Ring

 Part No : SP15SQ

 Speaker Size : 15 in Square

 Thickness (mm): 18mm

 Dimension A (mm): 358 x 358

 Dimension B (mm): 400 x 400

 Price Per Pair : £24.99
15in Square MDF Spacer Ring