Installing a bidet seat on a Gerber toilet requires careful attention to spacing and compatibility to ensure a secure and functional fit. Gerber toilets, known for their durable design and efficient flushing systems, each have unique dimensions that can impact your choice of bidet seat purchase. In addition to each toilet's specification sheet, this article serves as a complementary reference guide to help homeowners and professionals identify the spacing requirements when evaluating a better-fitting bidet seat on various Gerber toilet models.
| Toilet COMBO # | Product Name | Bidet Seat Spacing (Seat bolt holes to front of tank) |
| GRN31202 | Banner 1.28 gpf (4,8 Lpf) 12" Rough-In Round Front Toilet, GRN31152 Bowl with GRN38290 Tank White | 2 1/4" |
| GRN31212 | Banner 1.28 gpf (4.8 Lpf) 12" Rough-In Elongated Toilet, GRN31162 Bowl with GRN38290 Tank | 2 1/2" |
| GRN31218 | Banner 1.28 gpf (4.8 Lpf) 12" Rough-In ErgoHeight™ ADA Elongated Toilet, GRN31128 Bowl with GRN38290 Tank White | 2 1/8" |
| GRN31202S | Performance 1.28 gpf (4,8 Lpf) 12" Rough-In Round Front Toilet, GRN31152 Bowl with GRN38290 Tank, White, and GC550129 Seat | 2 1/4" |
| GRN31212S | Performance 1.28 gpf (4.8 Lpf) 12" Rough-In Two-Piece Elongated Toilet, GRN31162 Bowl with GRN38290 Tank and G0099213 Seat | 2 1/2" |
| GRN31218S | Performance 1.28 gpf (4.8 Lpf) 12" Rough-In Two-Piece ADA Elongated Toilet, GRN31128 Bowl with GRN38290 Tank and G0099213 Seat | 2 1/8" |
| GWS20902 | Maxwell 1.28 gpf (4,8 Lpf) 12" Rough-In Round Front Toilet, GMX21952 Bowl with G0028990 Tank White | 2 3/8" |
| GWS20912 | Maxwell® 1.28 gpf (4.8 Lpf) 12" Rough-In Elongated Toilet, GMX21962 Bowl with G0028990 Tank | 2 1/4" |
| GWS20918 | Maxwell® 1.28 gpf (4.8 Lpf) 12" Rough-In ErgoHeight™ ADA Elongated Toilet, GMX21928 Bowl with G0028990 Tank | 2" |
| GMX21022 | Maxwell® 1.6 gpf (6.0 Lpf) 12" Rough-In ErgoHeight™ ADA Compact Elongated Back Outlet Toilet, G0021975 Bowl with GMX28995 Tank | 1 1/2" |
| GWS31502 | Viper® 1.28 gpf (4.8 Lpf) 12" Rough-In Round Front Toilet, GVP31552 Bowl with GWS38590 Tank | 2 1/2" |
| GWS31512 | Viper® 1.28 gpf (4.8 Lpf) 12" Rough-In Elongated Toilet, GVP31562 Bowl with GWS38590 Tank | 2 1/2" |
| GWS31518 | Viper® 1.28 gpf (4.8 Lpf) 12" Rough-In ErgoHeight™ ADA Elongated Toilet, GVP31528 Bowl with GWS38590 Tank | 2 1/4" |
| GHE31519 | Viper® 1.28 gpf (4.8 Lpf) 12" Rough-In ErgoHeight™ ADA Elongated Compact Toilet, GHE31872 Bowl with GWS38595 Tank | 2" |
| GLF20551 | Viper® 0.8 gpf (3.0 Lpf) 12" Rough-In Two-Piece Round Front Toilet, GWS21551 Bowl with GLF28528 Tank | 2 1/2" |
| GLF20528 | Viper® 0.8 gpf (3.0 Lpf) 12" Rough-In ErgoHeight™ ADA Elongated Toilet, GWS21528 Bowl with GLF28528 Tank | 2 1/2" |
| GWS31802 | Avalanche® 1.28 gpf (4.8 Lpf) 12" Rough-In ErgoHeight™ ADA Round Front Toilet, GAV31852 Bowl with GWS38890 Tank | 3" |
| GWS31812 | Avalanche® 1.28 gpf (4.8 Lpf) 12" Rough-In Elongated Toilet, GAV31862 Bowl with GWS38890 Tank | 2 1/2" |
| GWS31818 | Avalanche® 1.28 gpf (4.8 Lpf) 12" Rough-In ErgoHeight™ ADA Elongated Toilet, GAV31828 Bowl with GWS38890 Tank | 2 1/2" |
| GWS20852 | Elite™ 1.28 gpf (4.8 Lpf) 12" Rough-In Two-Piece ErgoHeight™ ADA Round Front Toilet, GAB21852 Bowl with GAH28890 Tank | 3 1/4" |
| GWS20828 | Elite™ 1.28 gpf (4.8 Lpf) Simple Concealed Trapway 12" Rough-In ErgoHeight™ ADA Elongated Toilet, GAB21828 Bowl with GAH28890 Tank | 2 3/4" |
| G0020302 | ULTRA FLUSH® 1.6 gpf (6.0 Lpf) 12" Rough-In Round Front Toilet, GUF21342 Bowl with G0028380 Tank | 2 1/2" |
| G0020312 | ULTRA FLUSH® 1.6 gpf (6.0 Lpf) 12" Rough-In Elongated Toilet, GUF21372 Bowl with G0028380 Tank | 2 3/8" |
| G0020318 | ULTRA FLUSH® 1.6 gpf (6.0 Lpf) 12" Rough-In ErgoHeight™ ADA Elongated Toilet, GUF21377 Bowl with G0028380 Tank | 2 1/2" |
| G0020310 | ULTRA FLUSH® 1.6 gpf (6.0 Lpf) 4-1/4" Vertical Rough-In Elongated Back Outlet Toilet, GUF21374 Bowl with G0028380 Tank | 2 1/4" |
| G0020325 | ULTRA FLUSH® 1.6 gpf (6.0 Lpf) 4-1/4" Vertical Rough-In ErgoHeight™ ADA Back Outlet Elongated Toilet, GUF21375 Bowl with G0028380 Tank | 2 1/4" |
| G0020832 | Avalanche® 1.28 gpf (4.8 Lpf) 12" Rough-In Two-Piece Skirted Concealed Trapway ErgoHeight™ ADA Elongated Toilet, G0021832 Bowl with G0028830 Tank | 2 3/8" |
| G0021019 | Avalanche® 1.28 gpf (4.8 Lpf) Concealed Trapway 12" Rough-In ErgoHeight™ ADA Elongated One-Piece Toilet | 1 3/4" |
| G0020181 | Hinsdale® 1.28 gpf (4.8 Lpf) 12" Rough-In ErgoHeight™ ADA Elongated Toilet, G0021181 Bowl with G0028181 Tank | 2 1/4" |
| G0020191 | Hinsdale® 1.28 gpf (4.8 Lpf) Simple Concealed Trapway 12" Rough-In ErgoHeight™ ADA Elongated Toilet, G0021191 Bowl with G0028191 Tank | 2 1/4" |
| G0020023 | Burr Ridge™ 1.28 gpf (4.8 Lpf) 12" Rough-In ErgoHeight™ ADA Elongated Toilet, G0021187 Bowl with G0028187 Tank | 2 1/4" |
| G0021187CT | Burr Ridge™ 1.28 gpf (4.8 Lpf) 12" Rough-In One-Piece Skirted Concealed Trapway ErgoHeight™ ADA Elongated Toilet | 1 5/8" |
| GHE20018 | Logan Square™ 1.28 gpf (4.8 Lpf) 12" Rough-In ErgoHeight™ ADA Elongated Toilet, GHE21538 Bowl with GHE28530 Tank | 2 3/8" |
| G0021020 | Logan Square™ 1.28 gpf (4.8 Lpf) 12" Rough-In One-Piece Simple Concealed Trapway ErgoHeight™ ADA Elongated Toilet | 2" |
| G0020196 | Wicker Park™ 1.28 gpf (4.8 Lpf) 12" Rough-In Skirted Concealed Trapway ErgoHeight™ ADA Elongated Toilet, G0021196 Bowl with G0028196 Tank | 2 1/2" |
| G0021221 | Wicker Park™ 1.28 gpf (4.8 Lpf) 12" Rough-In One-Piece Skirted Concealed Trapway ErgoHeight™ ADA Elongated Toilet | 2 1/4" |
| G0020197 | Lemora® 1.28 gpf (4.8 Lpf) 12" Rough-In Skirted Concealed Trapway ErgoHeight™ ADA Elongated Toilet, G0021197 Bowl with G0028197 Tank | 2" |
| G0021021 | Lemora® 1.28 gpf (4.8 Lpf) 12" Rough-In One-Piece Skirted Concealed Trapway ErgoHeight™ ADA Elongated Toilet | 2" |
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