Feature: Reversible S-blade
Benefit: Allows you to stock only 1 fan part number instead of 2 (pusher/puller). S-blade provides lower noise.

Feature: Sealed Motor
Benefit: Dust and water resistant. Can be sprayed clean.

Feature: All plastic is glass filled nylon. No inferior polyproylene mixes.
Benefit: Highest temperature and highest impact resistant material used in the market.