Unicel Replacement Cartridge – 75 sq ft | Model C‑7375
The Unicel C‑7375 is a premium OEM-style replacement spa cartridge offering approximately 75 sq ft of high-efficiency spunbonded polyester (Reemay®) media. Designed for newer-model Caldera spa systems (e.g. new-style “75” spa cartridges, OEM Caldera part numbers 1019301/73531).
Key Features:
- 75 sq ft of filtration area with approximately 216 pleats for maximum dirt-holding capacity
- Compact dimensions: 7″ outer diameter × 14 ¾″ length
- Top end cap: semi-circular handle for easy removal; bottom end cap: open with 2 11/16″ inner diameter
- Constructed from durable 3 oz/yard spunbonded polyester media, chemical-resistant and washable
- Rinseable and reusable for multiple cleaning cycles
Maintenance Tip: Rinse gently with a garden hose—avoid using pressure washers to preserve the pleat structure. Replace annually or sooner if filter pressure rises or flow decreases.
SKU: C-7375
