The Aquascape Pondless® Waterfall Vault was designed to integrate with the AquaBlox® making installation a snap.
The Pondless® Waterfall Vault's standard height is for basins using the Small AquaBlox®. 
Optional Pondless® Waterfall Vault Extensions can be used when creating deeper basins using the Large AquaBlox®.
The vault's extra wide opening provides easy access and the large interior fits a wide range of pump sizes. 
The lid is easy to camouflage, and includes a built-in water level inspection port Allowing it to be buried out of sight.
Features:
Vault: 23" L x 17" W x 25.5" H 
Lid: 16" L x 16" W 
Capacity: Up to 12,500 gal/hour 
Weight: 16 lbs.