Gerber av-28-890-09 Toilet Tank 1.6 Gpf 12 in Rough-in

Product Description

The GERBER av-28-890-09 is a vitreous china toilet tank from the Avalanche series, designed as a direct replacement or new-installation tank for residential and light commercial toilet applications. It operates at 1.6 gallons per flush (GPF), meeting standard low-consumption flush requirements. The tank features a right-hand lever flush actuator and a 3-inch flush valve for reliable, consistent flush performance. At 17.125 inches tall and 7 inches wide, it is sized for a 12-inch rough-in configuration. Licensed plumbers and experienced installers handle this type of replacement in both new construction and retrofit scenarios.

This tank is suited for residential bathroom installations requiring a 12-inch rough-in toilet with a 1.6 GPF flush rating. The Avalanche series tank is finished in Biscuit, making it a color-matched option for bathrooms where white is not the specified fixture color. The right-hand lever placement follows standard North American toilet conventions and is compatible with the corresponding Avalanche bowl. Install as a standalone tank replacement or as part of a complete toilet assembly where the tank is purchased separately from the bowl.

Key Features

• 1.6 GPF flush volume meets standard low-flow plumbing code requirements
• 3-inch flush valve for strong, reliable flush actuation
• Right-hand lever flush operation — standard North American orientation
• 12-inch rough-in sizing for compatibility with the most common toilet footprint
• Vitreous china construction for durability and ease of cleaning
• Biscuit finish for color-coordinated installation in non-white bathroom settings

Compatibility

Designed as an OEM-style tank for the Gerber Avalanche toilet series with a 12-inch rough-in configuration. Confirm bowl model compatibility before ordering, as tank-only purchases require a matching Avalanche bowl.

Installation Notes

Installation of this toilet tank is typically performed by a licensed plumber in accordance with local plumbing codes and IPC guidelines. Shut off the water supply at the stop valve and flush the existing tank to empty it before beginning any tank removal or installation work. Do not overtighten tank bolt connections to the bowl, as vitreous china can crack under excessive torque. Verify all supply line connections and the fill valve operation before returning the fixture to service.