The Maxi-Grid 400 20″ High Link Panel is the higher-efficiency option in the 20″-high linked panel line — pre-linked 4-ply MERV 11 panels for side-access housings where finer particle capture is required in a panel form factor. Initial pressure drop is 0.48″ w.g. at 400 FPM per panel with a dust holding capacity of 195 grams at 1.5″ w.g. The extra ply enables MERV 11 capture; the higher pressure drop is the engineering trade-off. Specify the MG400 20″ Link Panel for offices, schools, hotels, and light industrial systems where MERV 11 is the target.
What link panels are and why they matter
Link panels are pre-linked continuous strips of individual filter panels designed to drop into side-access filter housings as a single unit. Standard panel filters (front-access) install one panel at a time into a holding frame; link panels replace an entire row of filters in one motion. Two operational benefits result:
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Eliminated air bypass: Conventional individual panels can leave gaps between filters or at the end of a track, allowing unfiltered air to pass through. Link panels are continuously joined — no gaps, no bypass.
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Faster installation and removal: Maintenance personnel pull and replace one continuous unit per filter track instead of multiple individual panels. Significant labor savings on large air handlers.
This product covers the 20″-high panel section of the Maxi-Grid MG400 link line — the tallest panel-section height in the standard Maxi-Grid family. Each linked unit is built around 20″-tall individual panel sections joined together. Choose the number of panels (2 through 8, or the 24-panel Master Link) based on the length of your housing track, and the panel width (20″x16″ through 20″x25″) based on your housing depth.
Need a different panel-section height?
If your housing uses shorter filter tracks, see the matching Koch Maxi-Grid MG400 16″ High Link Panel or 12″ Standard Link Panel. Same construction, same MERV 11 rating, same case-pack pricing model — just sized for shorter housings.
When Maxi-Grid MG400 20″ Link Panel is specified
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Offices, schools, hotels with 20″ side-access housings requiring MERV 11 capture
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Light-industrial systems in 20″ side-access configurations
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Healthcare and laboratory pre-filtration — ahead of MERV 13+ final stages
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Variable-air-volume systems with 20″ side-access housings — the 4-ply construction holds up to airflow swings
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Large industrial air handlers with tall side-access tracks where MERV 11 is required
Sizing the link panel to your housing
Each 20″ link panel is identified by two dimensions:
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Panel count: How many 20″-tall panels are linked end-to-end. Available from 2-panel (32″-34″ total length range) up through 8-panel (200″+ total), plus the 24-panel Master Link (continuous extra-long unit). Select the count that matches your housing track length.
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Panel width: 20″x16″, 20″x18″, 20″x20″, 20″x22″, 20″x24″, or 20″x25″. Match to your housing depth.
The 20″ line offers 6 panel widths — the broadest housing-depth range in the standard Maxi-Grid Link family (compared to 5 widths on the 16″ line and 3 widths on the 12″ line).
Design and construction
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Panel height: 20″ (per individual panel section)
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Configuration: Pre-linked continuous panel filter for side-access housings, 4-ply construction
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Media: 100% synthetic, progressively dense (suitable for high-moisture applications)
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Frame: Self-sealing design with steel internal support wire
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Tackifier: Downstream
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Antimicrobial: No
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Efficiency rating: MERV 11 per ASHRAE Test Standard 52.2
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Initial pressure drop: 0.48″ w.g. at 400 FPM face velocity (per panel)
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Dust holding capacity: 195 grams at 1.5″ w.g. final pressure drop (per panel)
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Listings: UL Classified per UL Standard 900
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Reference bulletin: Koch K-902
What MERV 11 captures
Captures fine dust, smoke, auto fumes, and most airborne particles down to 1 micron. A strong general-purpose efficiency for offices, schools, hotels, and light industrial.
Why 4-ply construction
The MG400’s additional media layer is what enables MERV 11 capture in a panel form factor. The four progressively dense layers each capture a specific particle-size range — coarser particles in the upstream layers, finer particles in the downstream layers. This staged capture also extends service life by distributing particle loading across all four layers. The trade-off is the higher initial pressure drop (0.48″ w.g. per panel); confirm your blower can handle this resistance before specifying.
Choosing across the Maxi-Grid 20″ Link Panel line
Koch offers four Maxi-Grid sub-lines in the 20″ high link panel format:
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MG200 20″ Link (MERV 7): Most economical, 3-ply, downstream tackifier. Equipment protection and prefilter applications.
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MG300 20″ Link (MERV 8): All-purpose workhorse, 3-ply, lowest pressure drop in the line. Standard commercial HVAC.
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MG400 20″ Link (MERV 11): Higher efficiency, 4-ply, higher pressure drop. Light-industrial and high-IAQ commercial.
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MG550 20″ Link (MERV 8): Antimicrobial-treated 3-ply with heavy-duty wire support. Healthcare, food processing, high-moisture sites.
Form-factor decision: 20″, 16″, or 12″ Link — or Standard Panels?
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This product (20″ Link): Pre-linked continuous panels, 20″-tall sections, for side-access housings with 20″ filter tracks. The tallest standard Link Panel option.
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16″ Link Panel (sister product): Same construction, 16″-tall sections, for housings with 16″ tracks.
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12″ Link Panel (sister product): Same construction, 12″-tall sections, for housings with 12″ tracks.
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Standard Panel (front-access): Individual panels installed one-by-one into front-access holding frames. Different form factor entirely.
Sizing and ordering notes
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Confirm your housing track length, depth, and panel-height requirement before ordering. Match panel count to track length, panel width to housing depth, and panel-section height (20″ here) to your filter track.
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Sold by the case. Carton quantity varies by panel count: 2-panel link = 12 units per case; 3-panel = 8; 4-panel = 6; 5-panel = 5; 6-panel = 4; 7-panel and 8-panel = 3; 24-panel Master Link = 1 per case. The variant price is the case price.
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Need a non-standard length, width, or height? Request a quote for custom link configurations or facility-scale orders.
