This is a Wool Felt Filter. Screen in the center and gaskets included.
Replacement for the following numbers:
1A-25A, 1A-25B, 77, S264, F10, F12, F15, F20, F25, 264, 264F, F300, A-77, 8055.
Maximum Reliability for your customers:
10 GPH Firing Rate at 10 Microns.
Compatible with Fuel Oil Conforming to ASTM D396-09 (up to B5).
Center core bonded to prevent media migration.