TOTO ST436EMA#01 Aquia IV Cube Toilet Tank Specifications

  • Overall Height: 13-7/8" (bottom of the base to the highest point of the toilet)
  • Overall Depth: 6-3/8" (furthest point back to front of toilet)
  • Overall Width: 16-1/2" (furthest point left to furthest point right)
  • Flow Rate: Adjustable 0.8 or 1.28 gallons-per-flush
  • Tank Width: 16-1/2" (left to right of tank)
  • Tank Depth: 6-3/8" (front to back of tank)
  • Tank Height: 13-7/8" (top to bottom of tank)

TOTO ST436EMA#01 Aquia IV Cube Toilet Tank Code Compliance

  • California CEC and CALGreen
  • EPA WaterSense
  • ADA compliant

TOTO ST436EMA#01 Aquia IV 6 3/8" Cube 1.28 GPF & 0.8 GPF Dual Flush Toilet Tank in Cotton

  • $197.40 Save $84

Free Shipping
on All Orders!

Ships within 2 - 3 business days
Free Shipping on All Orders!


The TOTO Aquia IV Cube Dual Flush 1.28 and 0.8 GPF Auto Flush Compatible Toilet Tank is designed for use with the Aquia IV dual flush bowl. The smooth rectangle shape offers a modern and sleek design to complete your bathroom.

Features TOTO's Dual-Max dual flush option, allowing you to proactively conserve water usage, allowing you to choose between a 0.8 GPF rinse or 1.28 GPF for tougher jobs. This version of the Aquia tank offers TOTO T40 WASHLET and Auto Flush compatibility for when you are ready to upgrade to a hands-free flush system with electronic bidet seat.

The Aquia IV Cube tank meets the standards for EPA WaterSense and California's CEC and CALGreen requirements. The Aquia IV Cube includes a tank to bowl gasket, tank to bowl hardware, and toilet bolt caps.

Additional items needed for installation and use must be purchased separately toilet bowl, wax ring, toilet mounting bolts, water supply lines, and optional WASHLET with Auto Flush kit purchased separately. The Aquia IV tank should be used with Aquia IV bowls.

TOTO ST436EMA#01 Aquia IV Cube Toilet Tank Features

  • Vitreous china construction
  • Aquia IV Cube toilet tank for use with Aquia IV toilet bowl
  • Dual flush system allows you to proactively conserve water - select 1.28 GPF or 0.8 GPF
  • Left hand trip lever
  • Auto flush compatibility
  • Included Parts: Tank to bowl gasket, tank to bowl hardware, and toilet bolt caps
  • Purchased Separately: Aquia IV bowl, wax ring, toilet mounting bolts, water supply lines, and optional WASHLET+ with Auto Flush kit.

TOTO