The Sand Filter/Pump/Ladder Accessory Pack includes the following items;

Hayward Powerliner 21″ Sand Filter (no sand)
Hayward Powerflo II (550watt)
Choice of Sterns A Frame Safety Ladder or Resin Indeck Ladder with Stainless Steel Handrails
Manual Cleaning Equipment and Test Kit

Upgrade options to the following ladders
Spacesaver Step + $990.00
Narrow Step + $599.00
Stainless Steel 3 Step + $459.00

Note any upgrades in the comments of your order.