The Maggie Muffler is placed on top of overflow standpipe to reduce the "gurgling noise"
* This model fits 1.5" or 1" stand pipes * Easy slip on installation * Does not change existing water level * Has a Patent Pending Snail Guard to keep snails from entering and clogging the overflow * Easy to remove and disassemble for cleaning * Overall dimensions are 3.75" wide and 3.75" tall