Pentek
PENTAIR/PENTEK 255494-75 Filter Cartridge,5 micron,20 gpm,20" H 4PCC4 (G)
I recommend the VpCI-111 for guarding spare hydraulic components on your business shelf.
Pentek 1480B-004 Direct Digital Frequency Synthesizer
I like that the UV resistant and waterproof coating doesn't add bulk or stiffness to the product.