The Sunco Duct LP-1ZANT-35-3x25 is a low-profile insulated distribution box designed for restricted ceiling and roof spaces. It combines one 350mm motorised inlet with three 250mm outlet spigots in a compact 260mm-deep body.
Comparable EPP products generally require approximately 40mm thickness to approach R1.0- worth checking when assessing R-value claims on thin moulded boxes. Foamed rotomoulded LLDPE fittings may require approximately 25–35mm to reach R0.4, depending on foam density, consistency and verified thermal conductivity.
While R0.4 may satisfy minimum requirements in some applications, higher thermal resistance provides greater protection against surface condensation in Queensland’s hot, humid roof spaces—helping prevent coffee-coloured ceiling stains and costly callbacks.
Pair it with our Australian made 4-Zero R1.5 Flexible Duct for a high-performance thermal installation designed for Queensland conditions.
Custom spigot and motorised zone-outlet configurations are available in 200mm, 250mm and 300mm sizes. Hit us up and we can make it happen!
Fast Clip-In Installation - No tools required!
The compact ANT body fits through most larger return-air grille openings before its fittings are installed.
Each 200, 250, 300mm zone motor and spigot fits through the opening of the round diffuser. The flexible duct can be taped to the spigot below the ceiling, passed into the roof space and clipped directly into the ANT body.
Features
Low-profile design for restricted spaces
1 × 350mm low-profile clip-in zone motor
3 × 250mm clip-in outlet spigots
Zone motor cable included
Graphene foam seals on all clip-in connections
CNC-cut, precision-mitred PIR construction
Fast installation with less assembly in the roof
Specifications
| Specification | Details |
|---|
| Part Number | LP-1ZANT-35-3x25 |
| Body | 21mm foil-faced PIR ductboard |
| Body Size | 450 H × 600 W × 260 D mm |
| Thermal Conductivity | 0.022 W/m·K |
| Calculated Material R-Value | R0.95 m²·K/W |
| Inlet | 1 × 350mm motorised |
| Outlets | 3 × 250mm spigots |
| Zone Configuration | One zone controlling three outlets |
| Indicative Maximum Airflow* | Up to 750 L/s |
| Motor Cable | Included |
| Connection Seals | Graphene foam |
LP = low profile · 1ZANT = one motorised ANT zone · 35 = 350mm inlet · 3x25 = three 250mm outlets
*Actual airflow depends on available fan static pressure, flexible-duct length and compression, bends, outlet resistance and system commissioning.
