Hibbent Large Toilet Flapper for Gerber 99-788 3 Inch
- 3 inch flush valve size
- Gerber 99-788 compatible style
- Rubber flapper, blue
- Stainless steel chain in the name
- 4.2 ounces, 1 piece in the model
- Water conserving design in the name
Last refreshed Sep 8, 2026 · Based on the Amazon listing and published specifications, not hands-on testing.
A blue rubber replacement flapper for toilets with a three inch flush valve, listed as compatible with a Gerber model. The listing mentions no hardware or detailed fit guidance.
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ASIN: B08V5CXV1CModel: 1pCategory: Toilet Flappers
Overview
Not a two inch flapper, this Hibbent replacement is made for three inch flush valves and compatible with Gerber style tanks. It is blue rubber with a stainless steel chain and a water conserving design.
A matching flapper restores the seal that stops water running into the bowl. The limitation is that the listing does not state compatibility beyond the Gerber model and three inch size, so confirm your valve before buying.
Who it's for
A toilet that runs on or refills by itself between flushes is the typical case for a replacement flapper. Owners of other valve sizes should measure the opening first.
Pros and cons
- Fits three inch flush valves
- Stainless steel chain
- Fit limited to listed valve type
- Hardware not described
- Other brands not confirmed
Performance notes
The rubber seal presses on the valve seat, and a worn or warped flapper lets water trickle through. Chain length and tension decide how long the flapper stays open, which affects the water used per flush.
Specifications
| Brand | Hibbent |
|---|---|
| Model | 1p |
| Dimensions & fit | |
| Size | 3 Inch |
| Item dimensions | 1 x 2 x 3 inches |
| Item weight | 4.2 ounces |
| Construction & materials | |
| Material | rubber |
| Color | Blue |
| Other details | |
| Style | Compatible with 3-inch Gerber 99 788 |
| Item Model Number | 1p |
Closest rivals on specs
Korky 3060BP Large Toilet Flapper 3 Inch- Item Weight 0.26 vs 0.2 pounds (+30%)
Lydia's Deal RXZER1 Toilet Flapper 2 Pack- Item Weight 0.26 vs 0.2 pounds (+30%)
Frequently asked questions
What comes in the Hibbent flapper box?
One flapper, per the model 1p, with a stainless steel chain named in the title. No other hardware is listed.
Will the Hibbent flapper fit a two inch valve?
No. It is a three inch flapper for three inch flush valves.
What is the Hibbent flapper made of?
Rubber, with a stainless steel chain.
Which toilets does the Hibbent flapper suit?
The style is listed as compatible with the 3-inch Gerber 99 788.