Pentek Melt Blown Filter 4.5 x 20 inch Dual Gradient

Dual Gradient Polypropelene Sediment Filter

Available in the following Micron Ratings & Model Numbers:
DGD2501-20 BB 25/1 (has 25 micron pre-filter & 1 micron post-filter)
DGD5010-20 BB 50/5 (has 50 micron pre-filter & 10 micron post-filter)
DGD7525-20 BB 75/25 (has 75 micron pre-filter & 25 micron post-filter)

These are the soft best quality polypropylene filters not the glued hard imported type. 
Quantity Discounts

Manufactured from 100% Pure Polypropylene
Designed for Purity and chemical compatibility
Two separate gradient density layers enhance filter cartridge performance
Three times the dirt holding capacity of similar sized sediment cartridges The DGD Series Cartridges are manufactured from 100% pure plypropylene and are sized for use in our Big Blue filter housings. The DGD Series Cartridges are manufactured from 100% pure plypropylene and are sized for use in our Big Blue filter housings.
DGD Series Cartridges are designed for purity and will not impart taste, odor or color to the liquid being filtered. Additionally, the polypropylene construction provides superior chemical resistance and is not prone to bacterial attack.

The DGD Series advanced design combines selective "final filtration with appropriate "pre-filtration" to achieve up to 3 times the dirt holding capacity of similar size sediment cartridges and many more time that of standard spun or string wound cartridges. This performance enhancement is achieved by combining two separate gradient layers in one filter.

The larger diameter of the pre-filter reduces the particle load to the post filter, allowing it to operate a higher velocities. The effective filter depth is increased to a full 233% of standard spun-polypropylene or string-wound filters. This increased depth provides for very high particulate reduction efficiencies and added loading capacity.

The unique design and performance characteristics of the DGD Series filter cartridges make them an excellent choice for all residential, rural, municipal and commercial applications used as a whole house filter.