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Sign upGerber 99-788 Flapper For 3" Flush Valves
Gerber 99-788 Flapper Used in several HET High Efficiency Toilet Models. It does not have the extra hole on the underside like the 99-770. The flapper Measures about 3-5/8 inches across the top. Other variances of the part number are: G0099788, 99788, 0099788, 99-788, 99 788, 99788.
It replaces Gerber flappers: G0099833, 99833, 99-833.
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All OEM numbers are used for reference purposes only.
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