Canopy range hood inserts and liners

Canopy style range hoods are still popular in kitchens. There is confusion amongst consumers and sometimes trades people as to the distinction between a liner and an insert.

• A range hood liner is a metal plate of box that covers the exposed surfaces on the underside of the range hood canopy - its purpose is to protect combustable material that is exposed because the insert(the functional range hood component) does not cover the underside of the hood wall to wall - this is nearly always required when using stock or out of the box range hood inserts - btw code generally dictates that there may not be combustable material(wood) closer that 30" to a gas stove burner.
• A range hood insert is just that - its the functional part that inserts into the underside of a range hood canopy. Now if you have an off the shelf insert you will also generally require a liner of some sorts - this liner will need to be cut to allow the insert to fit into the cavity.



The component in the center is an insert - the flat material around it is a liner



At Custom Range Hoods we supply inserts that can be fabricated wall to wall by our supplier Modern Aire Ventilating - this has a few benefits:

• The baffle or mesh range hood filters are extended over a wider area and therefore less cooking residue is collected on a liner
• Bigger filter capture area combined with the best range hood blowers available ensures excellent vapour collection and disposal
• Installation is simpler and less expensive  - 1 component instead of two

 
These come in different styles:

• Mantle style hoods are basically rectangular in stucture and typically anywhere from 14" to 18" in depth
• These do pose challenges for effective ventilation especially over pro style stoves or ranges because there is not full coverage over the burners and vapours bleed up over the front.
• A partial solution is ensuring that the range hood blower is stronger than required to create high suction/negative air pressure around the filters
• The downside of this is excessive airflow noise due to the volume of air passing through the filters

A 14" deep by 72" wide insert into a mantle hood

• Stone or wooden hoods with inserts
• These are becomming very popular and from a ventilation standpoint pose no problems provided there is full coverage over the burners and the insert used has appropriate filters - ideally baffle style filters and adequate cfm via the range hood blower