The 10" Big Blue Filter Housing Sump is a durable replacement designed for heavy-duty filtration systems. It’s compatible with standard 10" x 4.5" Big Blue filter cartridges and major brands like Pentek, Culligan, and USFilter. Built to last, this sump ensures reliable performance and crystal-clear water for your entire home or office setup.

Key Features

🔧 Fits standard 10" × 4.5" Big Blue filter cartridges
🔗 Compatible with Pentek, Culligan HD-950, Ametek HD-10, Kleen-Plus, USFilter, and American Plumber housings
⚙️ Interchangeable with 20" Big Blue housings (same brand)
🚫 Not compatible between Blue and Clear housing types
🔄 Easy installation with any #10 Big Blue cap size
⚠️ Replacement sump only — O-ring not included
⏳ Recommended replacement every 5 years

Specification

📏 Filter Capacity: Holds 10" L × 4.5" W cartridges
🧩 Part Compatibility: Fits HD-950, HD-10, and equivalent models
🔩 Cap Type: #10 Big Blue caps (various inlet/outlet sizes)
💧 Material: Heavy-duty opaque blue polymer body
🔁 Interchangeability: Works with #20 Big Blue housings of same brand
⚠️ Included: Sump only — no O-ring or internal filter