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Gerber 28-992 Spec Sheet

Maxwell Round Front Tank, 12 inch Rough-In, 1.28 Gallons Per Flush

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Product Overview

Optimize your project planning with the Gerber Maxwell 28-992, a 1.6 GPF (6.0 LPF) round front toilet crafted from durable vitreous china. This high-efficiency fixture, weighing 76 lbs and featuring a 2" glazed trapway with a 12" rough-in, meets ASME A112.19.2 low consumption standards. Easily access the detailed spec sheet and shop drawings for seamless submittal to ensure compliance and precision in your installations.

Key Features

  • Two-piece, round front design
  • Combination bowl and tank (insulated tank model 28-992)
  • 1.6 gallons per flush (6.0 LPF)
  • 12-inch rough-in
  • Round front bowl
  • Dual-fed siphon jet
  • Pilot fill valve
  • 3-inch flush valve
  • 2-inch glazed trapway
  • Double Nut Mounting System
  • Color matched front tank lever (white only)
  • Includes 2 bolt caps
  • Large water surface
  • Toilet seat not included
  • 5-year Limited Lifetime Warranty

Technical Specs

ColorsWhite (Other colors available, refer to Price Book)
MaterialVitreous china
Rough-In12" (305mm)
Flow Rate1.6 GPF (6.0 LPF)
DimensionsOverall Height: 28 13/16" (732mm), Overall Depth: 27 1/8" (689mm), Overall Width: 14 7/8" (378mm)
CertificationsASME standard A 112.19.2, Low Consumption Water Closet
Product Weight76 lbs
Trapway Diameter2" glazed
Bowl Height (to rim)17 5/16" (440mm)

About This Spec

Last Verified

October 15, 2026

Status

Verified (6x confirmed)

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