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1/4" Thick anodized aluminum backing plates PN: MP-004 3X4 PN: MP-006 4X4 PN: MP-008 5X5 Use with our mounting plates to put on the underside of boat deck to "sandwich" your installation for more rigidity. Select size from drop down.
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🇺🇸 Ship from USA · On Agora since 2026
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