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RV Toilet Seat Bolt-Spacing Adapter Bar
This bar lets a standard residential toilet seat bolt onto RV and marine bowls whose seat holes are closer together than normal. It is 180 x 36 x 12 mm. The inner 11 mm slots bolt to the bowl at any spacing from 60 to 100 mm, and recesses on top keep those bolt heads low. The outer slots take seat hinge bolts at 130–156 mm centres, which covers the common 5-1/2 in (140 mm) spacing. Their nuts sit in 6 mm deep, 22 mm wide pockets underneath, clear of the porcelain. The seat ends up 12 mm higher.
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