Dune Max has a non-directional fine sand texture visual with high sound absorption of 0.70 NRC and about 85% light reflectance. It has superior humidity resistance (RH99) and is available as 600x600 and 600x1200 mm tiles in Board, Tegular and Bevelled Tegular edges, plus a 300x1200 mm plank. All sizes are 20 mm thick.

Key features

• Humidity resistance up to 99% RH
• Cleanability: with dry cloth
• Light reflectance 85%
• Non-directional fine sand texture visual
• High sound absorption: 0.70 NRC
• High light reflectance approx. 85%
• Superior humidity resistance: RH99

Applications

• Offices / Call Centre
• Education
• Retail
• Conference Rooms
• Auditoriums
• Corridors / Lobbies

Specifications

Reaction to Fire (as printed): Cls0/Cls1 | Sound Absorption (NRC): 0.7 | Sound Attenuation (CAC): 33 | Light Reflectance: 85% | Recycled Content: up to 78% | Humidity Resistance (max RH): 99% RH | Cleanability: with dry cloth | Relative Price Index (brand symbol scale, Min/Mid/Max): Mid | Sound Absorption by One-Third Octave Band (alpha p): 125 Hz: 0.39, 160 Hz: 0.35, 200 Hz: 0.37, 250 Hz: 0.43, 315 Hz: 0.48, 400 Hz: 0.58, 500 Hz: 0.70, 630 Hz: 0.80, 800 Hz: 0.83, 1000 Hz: 0.85, 1250 Hz: 0.82, 1600 Hz: 0.85, 2000 Hz: 0.82, 2500 Hz: 0.77, 3150 Hz: 0.74, 4000 Hz: 0.69 | Sound Attenuation Dncw by One-Third Octave Band (dB): 125 Hz: 21, 160 Hz: 22, 200 Hz: 26, 250 Hz: 26, 315 Hz: 25, 400 Hz: 25, 500 Hz: 27, 630 Hz: 31, 800 Hz: 35, 1000 Hz: 38, 1250 Hz: 42, 1600 Hz: 46, 2000 Hz: 51, 2500 Hz: 55, 3150 Hz: 59, 4000 Hz: 56 | Acoustic Test Basis: Tested in independent third-party quality-assured laboratory per EN ISO 354, EN 20140-9 and ISO 140-9 with ceiling installed over 200 mm and 300 mm cavity; NRC per ASTM C423; Dncw per EN ISO 717-1 (p28) | Thickness: 20 mm | Noise Reduction Coefficient (NRC): 0.70 (tiles and planks) | Sound Absorption Coefficient (125 / 250 / 500 / 1000 / 2000 / 4000 Hz): Tiles: 0.39 / 0.43 / 0.70 / 0.85 / 0.82 / 0.69; Planks: 0.35 / 0.37 / 0.75 / 0.87 / 0.76 / 0.54 | Ceiling Attenuation Class (CAC): 33 dB | Fire Reaction: Class 0/Class 1 as per BS 476 Pt 6&7; Class A as per ASTM E-84 | Thermal Conductivity (lambda): 0.052 - 0.057 W/mK | Humidity Resistance: RH 99% | Weight: 5.16 kg/m2 | Edge Details and Compatible Suspension: Board: Prelude 24 mm; Tegular: Prelude 24 mm; Bevelled Tegular: Suprafine 15 mm / Silhouette | Available Sizes: Tiles 600 x 600 x 20 mm; 600 x 1200 x 20 mm; Plank 300 x 1200 x 20 mm

Standards: BS 476 Part 6 & 7 - Class 0 / Class 1 | EN ISO 717-1 (Dncw) | EN 20140-9 / ISO 140-9 (sound attenuation) | EN ISO 354 (sound absorption) | ASTM C423 (NRC) | GreenPro (brand states Armstrong mineral fibre ceilings are GreenPro classified - brochure-level statement, p16) | BS 476 Pt 6&7 (Class 0/Class 1) | ASTM E-84 (Class A)

Warranty: Conditional: warranty offered only when ceiling tiles are installed with Armstrong steel angles and installation is carried out as per Armstrong Ceiling Solutions recommendations (warranty period not legible in extracted text)