GlasflossIndustries ZLP16251 Z-Line Series ZL MERV 10 Pleated Filter, Case of 12

Very nice filters. I'm using the MERV 10/11 rated filters. Great value.

I ordered these Dec 2014 and just used my last one from the box. I ordered a dozen because we have two furnaces so I have to replace two at a time. When I bought them last year they were around $44 and this year around $48. You would be hard pressed to find a better deal. Changing every couple months the box lasts me one year.The filters come on a box and are not individually wrapped. They are pleated and have a paper guard on each side plus metal guard on the side that sits next to your furnace. They are sturdy and work great, so I came back to reorder and figured I would leave a review at the same time.

My shipment was manufactured by "GlasFloss" [an American Company].Like other reviewers what I received was a 12pk of merv-10 (not Merv-8).As background I already own/use Merv-11 (which pure coincidence is also by GlasFloss).I ordered a Merv-8 to mitigate the increase of pressure drop which occurs with higher fan speed when running AC.Per a subpage within GlasFloss website back in 2015 a change occurred whereintheir "Z-line pleated filter" which was Merv-8 now certifies Merv-10 without a increase of pressure drop.As of this writing if you visit manufacture's website to buy thier z-line pleated filter it is sold as Merv-10. (they do not have a merv-8 option).Meanwhile the amazon listing you are reading is for a 12pk of Merv-8 [but no mention the mfg/supplier].Based on the above, if GlasFloss is the supplier you may [will] receive a merv-10.Obviously I have no idea if the above merv-8/merv-10 disconnect will always be true for everybodybut it was true for me and since there pressure drop is the same as when product was Merv-8 I am ok with receiving merv-10.Great filter at a great price.

These filters are great! My air handler often bends filters rendering them useless, but these Glasfloss filters are sturdy and collect lots of dirt! Been using them for many years. They are a great value for the money.

These are the exact furnace filters used by Hummelstown Fuel Oil Company when they serviced my furnace. They are extremely well built and do a great job capturing dust, animal dander and hair.

They fit right, filter right and don't collapse like some other filters I've had. I change them more often just because the price is great.

These filters arrived quickly and seem to be of good quality and the price was reasonable. They are not individually wrapped which is kind of nice. I think they are at least as good as those I have bought at Home Depot or Menards, and I did not have to make a trip to the store to get them.

These filters are sturdy, work well and were delivered very fast.. The seller is knowledgeable and quickly got back to me when I contacted him with a question. I have no reservations about recommending this seller to anyone.