This is a QUAD DE 100 REPLACEMENT Cartridge Filter- 178656.

• Cartridge replacement
• Straight, sharp and evenly spaced pleats for efficient dirt holding and capturing
• Durable polyurethane end caps for strength and proper sealing in filter tank
• Re-enforced center cores with a PVC center core for support
• Evenly spaced holes in center core for even distribution of water flow through the cleaning cartridge; measures 6-1/4-inch length by 32-3/4-inch height by 6-1/4-inch width