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NOTE: As of 4/13/26, Omega National's prefix has changed from NP to RS. This part number has changed from NP090SB42SM1 to RS090SB42SM1.
silver metallic range hood liner identifies this part as a finished metal liner designed for a range hood opening, so it creates a defined metal cavity around the Broan ventilation unit that helps protect the surrounding wood structure over the cooktop. The 40-7/16 inch length described in the product name sets the working span of the liner, which helps installers match it to wood range hoods built to accept this size opening without reworking the enclosure. Being part of the Range Hood Liners product class clarifies that this is the inner shell, so it provides a clean, continuous surface inside the hood where grease and vapors hit first. The straight liner wording in the product information shows it is a straight-run configuration, which suits linear hood designs where a simple rectangular metal envelope is required around the blower and duct area.
The range hood liners product class indicates this part is intended to sit inside a hood structure, so it provides a metal boundary between the Broan RH ventilation components and the surrounding wood when fitted into a custom enclosure. The straight liner description signals that it is shaped for a straight, rectangular opening, so fabricators can frame a simple box-style cavity in the wood hood to match the liner outline before installing the Broan unit. The 40-7/16 inch reference in the name gives a working length to design around, helping shop drawings and cut lists line up the wood face frame, bottom panel, and liner opening so the finished hood reads as one integrated assembly.
The category path of Kitchen & Bath Cabinet Accessories and Wood Range Hoods positions this Omega National Products liner for use inside built-in kitchen hood cabinetry, so it suits projects where the ventilation system is hidden behind a custom wood surround. The SAP description listing it as a Broan RH liner focuses its role in installations built around Broan RH ventilation, allowing the metal liner to act as the shaped interior cavity that receives that equipment within the wood hood. The straight liner terminology further fits jobs using straight-front hood designs, where the cabinetmaker frames a rectangular pocket and depends on a straight metal liner to define the interior dimensions. The silver metallic color in the web description lets designers coordinate the liner appearance with other silver-toned cooking equipment, so even when the interior is visible during use it reads consistently with the rest of the appliance suite.
The manufacturer part number 090SB42SM1 gives installers and shops a precise identifier, so they can repeat the same Omega National Products liner across multiple kitchens and keep drawings, ordering, and field installation tied to the same component. The web description calling out powder coated silver metallic color means the interior surface is a coated finish rather than raw metal, so routine cleaning after cooking leaves a more uniform look inside the hood over time. The 40-7/16 inch dimension in the product name becomes a fixed design reference, helping drafters set hood width, liner opening, and Broan RH unit placement so each project reuses proven dimensions. Being classified under Range Hood Liners confirms its purpose as the inner shell of the system, so trades can separate structural wood work, metal liner work, and Broan ventilation mounting into a clear sequence that keeps the installation process predictable from shop to field.
The Omega National Products liner forms the metal inner shell of a wood range hood, so it creates the cooking cavity where Broan RH ventilation components operate inside the cabinet structure.
The 40-7/16 inch length defines the liner span, so cabinetmakers can size the wood hood opening around this measurement for a consistent fit and predictable Broan RH placement.
The straight liner description indicates a straight, rectangular configuration, so it suits linear wood hood designs where a simple box-style interior cavity is required.
The powder coated silver metallic finish provides a baked-on coating, so the interior surface wipes down more evenly and presents a consistent metallic look in the cooking area.
The SAP description identifies it as a Broan RH liner, so it is intended as the metal cavity component surrounding Broan RH ventilation equipment in a custom wood hood.
The Kitchen & Bath Cabinet Accessories and Wood Range Hoods categorization places this liner inside the hood cabinet scope, so it aligns with custom range hood builds in kitchen projects.
The SAP description identifying this part as a Broan RH liner and the Range Hood Liners product class position it as the metal interior shell for Broan RH ventilation inside wood range hoods. The 40-7/16 inch reference in the product name gives a defined size to design around, supporting repeatable shop drawings and efficient field fitting. The silver metallic powder coated finish in the web description supplies a durable-looking interior surface that coordinates with typical kitchen appliances. For projects built around Omega National Products components and Broan RH ventilation, this straight liner offers a clearly defined piece of the overall hood assembly.
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