Filbur FC-9890 Pool 18" x 17-3/4" Rectangular DE Grid Filter appliedcomputer It is most helpful when

It is most helpful when the previous valve body is failing mechanically

and more reassuring to operate

The 4 pin Molex connection is the critical detail here because it keeps the cable matched to the system it is supposed to support

This type of component is especially useful when the rest of the heater circuitry remains serviceable and the problem is centered on the transformer alone

is heating inconsistently

Filbur FC-9890 Pool 18" x 17-3/4" Rectangular DE Grid Filter appliedcomputer It is most helpful whenA rectangular DE grid filter helps form the filtration surface inside a compatible diatomaceous earth filter system, and this Filbur FC 9890 grid is designed in an 18 inch by 17 3 4 inch format for matching pool applications. When the original grid becomes damaged or worn, the filter can lose the dependable debris capture support it should provide. The 18 inch by 17 3 4 inch dimensions and FC 9890 reference give this part practical value because DE