Thermaster Heavy Duty Supermarket Glass Sliding Lid Freezers 406L SD-406K

The Thermaster SD-406K is a 406-litre glass sliding-lid display freezer, built for supermarkets, IGAs, convenience stores, and ice cream retailers that need product visibility without losing freezer efficiency. The curved glass top lets customers see and select frozen products at a glance, while the sliding (rather than hinged) lid design means staff can access stock with one hand and reduces cold-air loss compared to lift-up lids. Climate Class 7 rated for performance in hot Australian retail environments up to 35°C.

Key features

• 406L gross capacity with curved glass sliding lid — high product visibility for impulse purchase, low cold-air loss
• Climate Class 7 rated (35°C ambient) — performs reliably in hot Australian retail floors and unconditioned shopfronts
• R290 natural refrigerant — low GWP, energy-efficient, meets Australian commercial refrigeration standards
• Aluminium alloy frame + 70mm high-density insulation — durable construction with strong cold retention
• Heavy-duty basket included + lockable — organised stock display, secure overnight
• Heavy-duty castors fitted — reposition for cleaning or layout changes; 10A plug-in power

Specifications

Venue suitability

Built for supermarkets, IGAs, convenience stores, ice cream retailers, butchers with frozen-meat impulse stands, and bottle shops with frozen-mixer or frozen-treat displays. The 1216mm width fits into most retail aisle ends and freestanding bays. Climate Class 7 makes it one of the few freezers in this size class certified for the hottest Australian retail conditions without performance loss.

Installation notes

Plugs into a standard 10A 240V outlet — no electrician needed. Allow 50mm clearance at the rear and sides for compressor ventilation. Heavy-duty castors let staff reposition the unit without forklifting. Manual defrost recommended every 4–6 weeks; the drain plug is at the base of the unit.

What's in the box

• 1 × Thermaster SD-406K display freezer
• 1 × heavy-duty basket
• Lock + key
• Manufacturer documentation + warranty card

Delivery & warranty

Ships Australia-wide on pallet freight. Warranty: 2 years parts & labour standard, plus 2 years parts only with product registration within 14 days — total 4 years parts cover. Claims handled through our Granville NSW base.

Frequently asked questions

Q: What's the difference between a sliding-lid and hinged-lid display freezer? A: Sliding lids stay in their plane (no upward swing) so staff can access stock with one hand and the lid doesn't block customer sightlines. They also lose less cold air per opening because the lid only partly opens at any time. Hinged lids fully open the cabinet, which is faster for full-bin restocking but loses more energy on customer access. Sliding (this unit) is the supermarket and ice cream retail standard.

Q: Why does Climate Class 7 matter in Australia? A: Class 7 means the freezer is rated to maintain set temperature in ambient conditions up to 35°C / 75% RH. Lower-rated cabinets (Class 3–5) struggle in hot Australian retail floors, especially in summer or in stores without strong air conditioning. Class 7 protects ice cream and frozen product from soft-melt at the top of the bin during heatwaves.

Q: What temperature range does it hold? A: -18 °C to -22 °C. That's the standard hard-freeze range for ice cream, frozen meals, frozen meat, and frozen seafood. The analogue controller is set at the back; ask staff to verify with a calibrated probe weekly for HACCP compliance.

Q: Does it run on standard Australian power? A: Yes — 240V single-phase, 10A plug-in. Total draw is 180W during normal cycling, which is low for a 406L freezer (the R290 gas + 70mm insulation help energy efficiency). No electrician required.

Q: Is the lid lockable for overnight or unstaffed periods? A: Yes — the SD-406K ships with a lock included. Useful for stores that close overnight, sites with high foot traffic outside of staff hours, or any retailer with high-value frozen stock.

Q: What does the warranty cover? A: 2 years parts and labour standard. Register the product within 14 days of invoice for an extra 2 years parts-only — total 4 years of parts cover. Hot-water immersion damage, dropped-product breakage of the glass lid, and dirty-condenser failures are excluded.

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• Browse all display freezers
• See the full Thermaster range