Glass Door Merchandiser Buying Guide: Swing vs Sliding Doors, Sizing and Where to Put It

A glass door merchandiser is a refrigerator that is also a shelf display: the customer sees the product, picks it, and the door closes behind them. That makes it a different purchase from a back-of-house reach-in. This guide covers the four things that decide whether a merchandiser sells product or just hums in the corner — temperature range, door style, size, and where you put it — using the numbers from the Polarman SGD and HGD lines.

1. Beverage cooler or food-grade merchandiser

Not every glass door cooler is built to hold food at a safe temperature. The two Polarman families are set up for different jobs:

If the case will hold anything perishable — sandwiches, yogurt, cut fruit — it needs to hold 41°F or below, and that means the HGD refrigerator or a freezer. A beverage cooler that tops out at 50°F is fine for soda and fails a health inspection with a sandwich in it. Our temperature guide lists the limits by product.

2. Swing door or sliding door

Swing doors seal better and are the default. Sliding doors exist for one reason: the aisle in front of the case is too narrow for a door to swing open, or the case sits behind a counter where a swinging door would hit staff. The two-door SGD models come both ways on the same cabinet:

Two things to know about sliding doors: they always leave one door partly behind the other, so only one section is fully open at a time, and the track needs cleaning weekly or the doors stop closing on their own. If the aisle allows a swing door, use one.

3. Size by facings, not by cubic feet

In a merchandiser the shelf front — the "facing" — is what sells. Cubic feet tells you how many cases you can stock behind it; door count tells you how many facings the customer sees. A quick sizing ladder:

The freezer versions — PLM-HGD12F, 16F, 23F, 48F and the three-door HGD72FDV — share the HGD cabinets and hold −10°F to 10°F. They draw more: 5 A for the small singles, 8–9 A for the 23–48 cu ft units, and the 72 cu ft three-door freezer runs on 220V three-phase, not a wall outlet.

4. Where to put it

Placement decides more of the electricity bill than the compressor does. Every model in the line is bottom-mounted, which keeps the condenser out of the warm air near the ceiling and lets the cabinet sit closer to a wall than a rear-mount would. Beyond that:

• Keep it out of direct sun. A glass door in a west-facing window turns the case into a greenhouse; the compressor runs continuously and the top shelf still warms.
• Leave clearance at the condenser grille. The intake is at the bottom front on these units; do not block it with a floor display or a mat.
• Face it toward foot traffic, not toward the register. A merchandiser sells because people walk past and see it. Behind the counter it is just a refrigerator.
• Load front-to-back, not side-to-side. Each facing should be one product all the way to the back, so the shelf never looks empty as it sells down.

Open-air or glass door?

For grab-and-go where speed matters more than energy — a checkout line, a café counter — an air curtain merchandiser with no door sells faster. A glass door case holds temperature far better, costs less to run, and is the right choice for anything that sits for more than a few hours. Most stores end up with one of each.

Checklist before you order

• Perishable food → HGD refrigerator (33–41°F) or freezer; drinks only → SGD beverage cooler (32–50°F)
• Swing doors unless the aisle is too tight; sliding needs weekly track cleaning
• Count facings you want to show, then pick door count; cubic feet is backup stock
• Dedicated 115V circuit; 220V three-phase for the 72 cu ft freezer
• Out of direct sun, condenser grille clear, facing the traffic