Unicel Replacement Filter Cartridge for Swimming Pool Filter Unicel # C4401; Quantity: 2 fire-protection BEAM LOCK- Set the beam

BEAM LOCK- Set the beam to stay how you like it

Compatible with the 3M Versaflo TR600 PAPR system

Sulfur Dioxide ADResistance:Organic Vapor

Visor Coating: Anti-Fog

Unicel Replacement Filter Cartridge for Swimming Pool Filter Unicel # C4401; Quantity: 2 fire-protection BEAM LOCK- Set the beamUnicel Replacement Filter Cartridge for Swimming Pool Filter Unicel # C4401; Quantity: 2 Diameter: 4 15 16 inch; length: 4 5 8 inch Top end cap: open, 2 1 8 inch inner diameter; bottom end cap: open, 2 1 8 inch inner diameter Pleat count: 158; filter media: 4 ounce reemay 2040; filter area: 35 square feet Get more efficient filtration and better water clarity with Unicel filters Longer time between cleanings; meets oem specifications