ACO KlassikDrain Type 420Q Slotted Galvanized Steel QuickLok Grate - 1 Meter

Product Details: ACO KlassikDrain Type 420Q Slotted Galvanized Steel QuickLok Grate - 1 Meter

Galvanized steel grates are the general-purpose grate family for the ACO KlassikDrain K100 and KS100 4" trench drain systems, engineered to capture and convey stormwater across commercial and industrial applications. Grates in the 100 series are shared across both edge-rail materials, so a single part number fits galvanized-rail K100 channels and stainless-rail KS100 channels alike. The galvanized family spans perforated, slotted, longitudinal, and mesh patterns in 1 meter and 0.5 meter lengths, with EN 1433 load ratings that run from Class A pedestrian duty up to Class E heavy industrial duty, and several patterns carry ADA-compliant, heel-resistant ratings. Every grate secures to the channel with ACO's boltless DrainLok or QuickLok locking, and because the grate fitted determines the realized load class of the installed system, grate selection is the key specification decision for any K100/KS100 run.

The Type 420Q (ACO part number 31530) is the 1 meter QuickLok version of the family's slotted grate, formed from 16 gauge galvanized steel and rated to EN 1433 Load Class A at 3,372 lbs (70 psi) for pedestrian-duty runs. Its 1.75" x 0.38" (45 x 10 mm) slots deliver 17.6 square inches (113.5 sq cm) of intake area per half meter of grate, and at just 5.9 lbs the low-profile 0.79" (20 mm) grate unlocks and lifts out easily whenever the trench needs to be inspected or cleaned. As a "Q" type, it secures with ACO's patented QuickLok boltless locking system: the grate stud push-fits into the stainless spring clip of a QuickLok locking bar, sold separately. Per the Jan-2026 spec sheet, the grate fits ACO Drain K100, KS100, H100-8, H100-10, and H100K-8 channels.

Quick Look

• Material: 16 Gauge Galvanized Steel
• For use with ACO Drain K100, KS100, H100-8, H100-10, and H100K-8 channels (Jan-2026 spec sheet) — 100-series grates are shared across edge-rail materials, so one part number serves both galvanized-rail (K100) and stainless-rail (KS100) channels
• Overall Width: 4.84" (123 mm), sized for the 4" (100 mm) internal width KlassikDrain channel
• EN 1433 load rated — the galvanized grate family spans Class A through Class E depending on grate type, and the grate fitted determines the realized load class of the channel system
• Boltless grate locking: "D" type codes use the DrainLok system (factory-fitted and barless — no locking bar needed); "Q" type codes use the QuickLok system (locking bar sold separately)
• Grates lift out after unlocking for uninterrupted access to the trench during maintenance
• Used for capturing and redirecting excess stormwater to safe locations
• ACO Part Number: 31530 (Type 420Q)
• Grate Length: 39.37" (1000 mm / 1 meter)
• Grate Height: 0.79" (20 mm)
• Slot Openings: 1.75" x 0.38" (45 x 10 mm) per the Specification Summary; the spec-sheet drawing also dimensions a 1.17" (30 mm) slot length
• Intake Area: 17.6 sq. in. (113.5 sq. cm) per half meter of grate
• Weight: 5.9 lbs
• Load Rating: EN 1433 Load Class A — 3,372 lbs (70 psi)
• QuickLok patented boltless locking — the grate stud push-fits into the stainless spring clip of a QuickLok locking bar, sold separately: channel locking bar part 02899, Series 900 catch basin bar part 98717
• Spec-sheet sidebar cites Australian Standard AS 3996-2006 Cl 3.3.6 (maximum slot length dependent on slot width for grates deemed Bicycle Tire Penetration Resistant)
• Limited-availability item — contact our team to confirm current availability and lead times

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