Darlly 40103 hot tub filter that fits inside the larger outer filter.
Has a 2 1/4″ hole running all the way through sometimes referred to as a bobbin filter
compatible with Pleatco PMA10 and PMA45 filters used on some master spa models.
Compatible with and can replace.
Please look at the photos ( for illustration only) and measurements closely and if you are in any doubt please call us for assistance in choosing your filter
- Diameter: 4″ (100 mm)
- Length: 7″ (170mm)
- Bottom Hole: 2 1/4″ (57mm)
- Hole: 2 1/4″ (57mm)
- Filtration size: 10 sqft
Used in some of these spas.