Rohner · Downdraft
Rohner Rohner Custom Downdraft
Filter kit, alternatives, and current pricing for the Rohner Custom Downdraft.
Rohner model • Rohner Custom Downdraft
Rohner Rohner Custom Downdraft Filter Fitments
Rohner's Custom Downdraft positioning is the engineering-driven full-downdraft choice for industrial-finishing operations where ceiling-plenum intake and a floor-pit exhaust pattern matches the coating specification. Each installation has its own engineering documentation describing ceiling panel layout, exhaust-pit pad arrangement, AMU air-handling spec, and capture-efficiency rating. Fitment requires the customer's project documentation. The catalog handles Rohner Custom Downdraft as a base fitment by published specification with a stronger-than-typical quote-back form because we expect meaningful variation across the installed base.
Quick answer
The Rohner Custom Downdraft is an engineered-per-project industrial downdraft booth, Rohner does not ship a single standardized downdraft SKU but rather builds each downdraft installation to the customer's coating specification, footprint, and capture-efficiency requirement. Filter kit selection follows the published-spec base fitment, with fitment by published specification when no field measurement exists yet. Source confidence on this fitment is authorized-dealer cross-reference, kit ships with quote-back form to upgrade to field-verified before subscription auto-renews. Variation across Rohner installations is high, so the quote-back form on the Custom Downdraft is stronger than typical.
How Rohner Custom Downdraft shops choose filters
Intake side. Ceiling-plenum diffusion intake with polyester or fiberglass diffusion media in the panel grid, exact panel dimensions and grid layout vary per build. The Rohner engineering documentation that shipped with the original install is the canonical reference; absent that, the Filter Finder photo set plus measurements drives the fitment match.
Exhaust side. Floor-grate exhaust pit with arrestor pad media. Fiberglass-arrestor pad is common across industrial-coating Rohner downdraft installations; polyester-arrestor or pocketed-paper as upgrades for specialty coatings. The new 25-entry filter media taxonomy on this site distinguishes 12 exhaust types, fiberglass-arrestor, polyester-arrestor, accordion-paper, paper-mesh, pocketed-paper, cube-overspray-arrestor, tower-exhaust-pocket-bag, plus five more, alongside 9 intake types and 4 specialty types. The Custom Downdraft kit names its specific exhaust slug per pit position only after field-verification confirms the dimensions; the base fitment ships the published-spec defaults with the quote-back upgrade path.
Slot expectations queued for re-mapping. The booth-model slot expectations row for the Rohner Custom Downdraft is currently flagged in our verification queue as pending re-mapping against the new 25-entry media taxonomy (the platform expanded from 9 to 25 media types on 2026-05-09). The kit you receive is correct relative to the published-spec base, we're updating the metadata record, not the physical fitment.
Cycle math. Cycle cadence is engineering-spec-driven rather than catalog default, typically tighter than collision-shop cadences due to industrial throughput and finish-quality requirements. Subscription cadences tune per-installation from delivery confirmations and quote-back paste-backs.
Regulatory landscape
Rohner Custom Downdraft installations are typically industrial-finishing operations where regulatory exposure runs through the customer's engineering-specification documentation as well as federal NESHAP applicability for the coating type. Federal OSHA spray-finishing standards (29 CFR 1910.94) apply across all installations. Verified-fitment kits maintain the original engineering-spec capture rating per build.
Who runs the Rohner Custom Downdraft
Three populations dominate the Rohner Custom Downdraft installed base. First, heavy-equipment manufacturing facilities where downdraft was the engineering-spec choice for finish-quality on the part type. Second, large-industrial coating operations doing high-finish-priority work where the ceiling-down airflow pattern matched the coating spec. Third, aerospace-adjacent and specialty-finishing facilities, defense subcontractors, marine, large-format precision components, where the Custom Downdraft was sized to a recurring high-spec part type.
Rohner Custom Downdraft filter FAQs
How do I confirm the published-spec base fitment is correct for my installation?
The Rohner nameplate carries the customer-build identifier, and the engineering-specification documentation that shipped with the original install is the canonical reference. The Filter Finder accepts the nameplate photo, the engineering documentation (if available), and interior measurements for verified-fitment matching. Variation across Rohner installations is high enough that field-verification meaningfully increases confidence.
What's the source confidence on this fitment, and what does that mean for me?
**Distributor-cross-ref (authorized-dealer cross-reference)**, kit ships with quote-back form to upgrade to field-verified. The Rohner Custom Downdraft quote-back form is stronger than typical because variation across installations is high. When you paste back your verified measurements, the record upgrades to field-verified and your subscription locks in. If your measurements differ from the published-spec base, we ship a corrected kit at no charge.
Why doesn't Rohner have a single standardized Custom Downdraft fitment?
Because Rohner builds engineering-driven configurations per customer rather than standardized factory SKUs. Each installation has its own capture specification, interior dimensions, and filter slot count documented in the build's engineering package. The "Custom Downdraft" classification names the airflow design, not a single product number.
What if I've lost the original Rohner engineering documentation?
Per-booth field verification through the Filter Finder is the documented path forward. We help reconstruct the filter-fitment specification from interior measurements, nameplate identification, and any retained dealer-side records. The published-spec base fitment ships first; the field-verification quote-back upgrades the record from there.
Can I run waterborne or specialty coatings through a Rohner Custom Downdraft?
Full downdraft is the airflow configuration most accommodating to waterborne and specialty coatings. Verify the coating you're spraying matches what the engineering package was sized for; the AMU air-handling spec is the constraint that matters most. Polyester-arrestor or pocketed-paper as upgrade exhaust media often makes sense for waterborne-heavy operations.
What if my Custom Downdraft has a non-standard ceiling configuration like dropped-pendant lighting cutouts?
Engineering customizations like lighting cutouts, robotic-arm mounting, or non-standard ceiling penetrations are typical on Rohner builds and the panel layout in the engineering documentation accounts for them. The Filter Finder photo set captures these configurations for fitment matching; non-standard ceiling layouts often produce non-standard panel SKUs that ship from the verified-fitment record once field-verification completes.
Sources
Primary references cited on this page.
- Authorized-Dealer Parts Cross-Reference (authorized-dealer cross-reference)internal:distributor-cross-ref-2026-04
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