Perfopan
Microustic® MICRO 4x4x1 PR5%
Microustic® MICRO 4x4x1 PR5% is a Perfopan micro-perforated wood panel with Ø1mm front holes on a 4 × 4mm grid and a 5% open area. Perfopan's data sheet gives NRC 0.70 without mineral wool and NRC 0.75 with it, at a 200mm mounting depth. It suits classrooms, open-plan offices and dining rooms that need steady mid-frequency absorption behind a calm timber face.
The 18mm MDF board is drilled from both faces, backed with Soundtex black glass tissue and fixed on an aluminium profile. Without mineral wool its published absorption reaches 0.86 at 500 Hz; adding 50mm wool lifts the overall NRC to 0.75. Finishes are wood veneer, HPL or lacquer to a RAL colour.
Not sure what your space needs? We can survey it or quote for supply and installation.
Ø1mm holes on a 4 × 4mm grid, 5% open
NRC 0.70, or 0.75 with mineral wool
Veneer, HPL or RAL lacquer finish
- Front holes: Ø1mm
- Hole pitch: 4 × 4mm
- Perforated area: 5%
- Perfopan code: MICRO 4x4x1 PR5% DS 64,000
- Board: 18mm MDF, standard or fire-resistant
- Back face: Soundtex black glass tissue
- Mounting: aluminium profile
- Finishes: wood veneer, HPL or lacquer to a RAL colour
Sound absorption: NRC 0.70 without mineral wool; NRC 0.75 with 50mm, 50 kg/m³ mineral wool
Absorption class: C (with and without mineral wool)
Mounting: aluminium profile; values tested at 200mm mounting depth
Front holes: Ø1mm at 4 × 4mm pitch, 18mm deep, 5% perforated area
Rear holes: confirmed from the data sheet at specification
Board reaction to fire: D-s2,d0 (18mm standard MDF), B-s2,d0 (18mm fire-resistant MDF)
Weight: 13.45 kg/m² (standard MDF), 14.60 kg/m² (fire-resistant MDF)
Sizes (mm): 512 × 1390, 672 × 1390, 512 × 2780 and 672 × 2780 in standard or fire-resistant MDF; 576 × 1800 and 576 × 3640 in standard MDF only (576 × 3640 not in veneer)
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Where it works, fire rating and fitting
Your product questions, answered, for UK schools, offices and venues.
It can be. Perfopan gives NRC 0.70 without mineral wool and 0.75 with it, at a 200mm mounting depth. For a school our acoustician assesses the room against its BB93 target at the survey and sets the coverage from that.
Perfopan's data sheet gives D-s2,d0 for the standard 18mm MDF board and B-s2,d0 for the fire-resistant MDF board. We check the chosen board and finish against your building's fire strategy before anything is ordered.
On Perfopan's data sheet, 50mm of 50 kg/m³ mineral wool raises the NRC from 0.70 to 0.75, and lifts absorption below 200 Hz. Our acoustician decides whether the room needs it at the survey.
Panels fix on an aluminium profile, and the depth of the cavity behind affects the result; Perfopan tested at 200mm. Our installation team confirms the substructure at the survey and sets out the panels on site.
Samples are available on request; allow a few working days. Quantities come from the room's size, finishes and use at the free site survey, which gives a quotation and an AI-assisted acoustic report. Before-and-after acoustic measurement is available as a paid add-on.
Too noisy? Let's talk silence.
Book a FREE site survey, and an acoustician will tell you exactly what your space needs. Rather talk first? Call +44 1908 880191.
