@StevenMathern @PlasticFull @SamJCauston @3M @rhysthomas They're very stable once assembled. The 3M filters have many more pleats than cheap ones, which provides high filtration surface area even in 1" filter vs. 2"
@StevenMatern@PlasticFull@Samjcouston@3M@Rhystomas他们组装后非常稳定。3M过滤器的褶皱比廉价过滤器多得多，即使在1英寸过滤器和2英寸过滤器中也能提供高过滤表面积