Alto-Shaam FI-25867 Filter,Grease,Ss 10X20X2.25

The "height" side runs parallel to the baffles from top to bottom, while the "width" side is the left-to-right measurement. Like this:

Yes. This is an OEM (Original Equipment Manufacturer) part.

An OEM part is the original component that was made for your equipment.

We also sell parts that are equivalent to OEM products, but are not genuine OEM. Each type has its own merits – these are some things to consider when making the decision between OEM and OEM-equivalent parts:

• Using an OEM part guarantees that you will comply with any valid manufacturer’s warranties and agency approvals on your product. An OEM-equivalent part may or may not offer the same guarantees.

• OEM-equivalent parts are built to the same specifications as the original part and are often available at a lower price point. In some cases it may even be sourced from the same location as the OEM part, though this will vary from item to item.

We list the nominal industry size of each filter on our site. The actual measurements are approximately 1/2" smaller in size.

These run up and down to allow grease to drain. If installed side to side, not only would you risk the handles getting in the way, but you would have grease build up, which is dangerous.