Back Bar Cooler Buying Guide: Depth, Doors and What Actually Fits

A back bar cooler is bought on the bar it has to fit into, not on capacity. Get the depth wrong and the cabinet will not go in at all; get the door style wrong and your bartender fights it every shift. This guide covers the two depths this category actually comes in, a trade between length and depth that lets a shallow cabinet hold as much as a deep one, the height figure most spec sheets get ambiguous about, what glass doors really cost you, and how to size the run without guessing at bottle counts.

1. A back bar cooler is not a bar fridge

The words look interchangeable and the products are not. A residential bar fridge or beverage centre is built to sit in a home bar: quiet, decorative, panel-ready, and designed for a room at 70°F with the door opened a few times an evening.

A commercial back bar cooler runs along the back wall of a working bar, usually with its top doubling as a work surface, with the door opened hundreds of times a night in a room that gets warm and crowded. It is NSF listed, stainless or powder-coated steel, on legs or casters so it can be pulled for cleaning, and built around a compressor sized for that duty. A residential unit put in that job runs continuously, stops holding temperature by the second summer, and in most jurisdictions will not pass inspection anyway.

2. Depth decides which line you can even use

This is the first number to check and the one most people check last. Back bar cabinets come in two depth classes, and our own Polarman line has both:

• Shallow — 24 7/16" deep. For bars with a narrow back run, a service corridor that has to stay walkable, or a cooler going against a wall with pipework already on it.
• Standard — 27 5/8" deep. Three and a bit inches more cabinet, and more capacity for the same length of bar.

Measure the back run of your bar from the wall to the edge of the walkway, then subtract what the bartender needs to pass behind a colleague. What is left is your depth budget, and it is not negotiable — a cabinet that does not fit is not a compromise, it is a return.

The trade nobody puts in writing: length buys back depth

If you are short on depth but have bar length to spare, the shallow line costs you almost nothing. Compare our two families at the point where they overlap:

Read the pairs. Spending 2 1/4 inches more bar length buys back the 3 3/16 inches of depth you do not have, with no loss of capacity at all — and the same trade repeats at the next size up, where 4 more inches of length covers the same depth gap. That is a very good deal if your constraint is the walkway rather than the wall.

3. Height: find out whether the number includes the legs

This is the quiet trap in back bar specs. A back bar cabinet is a body sitting on a leg set, and manufacturers quote height both ways — sometimes the body alone, sometimes the finished height off the floor — without always saying which. The same cabinet can therefore appear in two catalogues as two numbers more than five inches apart, and on some lines the solid-door and glass-door sheets for identical cabinets disagree with each other.

Our own range is one body height per depth class, plus a 5 1/2" leg set:

The number that has to clear the underside of your bar top is the overall one — 41 3/4" or 42 1/2" here. If it is a body height that makes a cabinet look like it fits under an overhang, a rail or a conduit run, it does not fit: that is the box without its feet.

4. Glass or solid doors

Glass sells. A glass door back bar cooler with LED lighting shows what you pour, which is worth real money at a bar where guests choose by looking. It also costs you three things:

• Insulation. Glass is a far worse insulator than a foamed solid door. The cabinet works harder for the same temperature, all night, in a warm room.
• Weight. Across our line the glass version of the same cabinet runs 40 to 68 lb heavier — a 90 3/8" solid cabinet is 412 lb and the glass version is 474 lb. That matters for the delivery path and for whoever has to move it to clean behind.
• Upkeep. Glass shows fingerprints, condensation and dust. It is a surface someone has to wipe every shift, and a smeared glass door sells worse than no glass door.

Solid doors are the right default for anything the guest does not see — a service well, a back corridor, the far end of a long run. Many bars mix: glass where the guest is standing, solid everywhere else.

5. Swing or sliding doors

This is decided by the aisle, not by preference. A swing door on a back bar cabinet opens into the space the bartender is standing in, and behind a busy bar that space is usually about thirty inches wide with someone else in it.

Sliding doors open into nothing. They cost you a little access — you can only ever open half the cabinet at once — but in a narrow service corridor they are the difference between a cabinet that works during a rush and one that gets left open because nobody has room to close it.

The two widths where you actually get the choice

Sliding glass is built on the shallow line only, and only at two widths. Everything else about the cabinet is identical to the swing version — same capacity, same 41 3/4" overall height, same 3 amps — so the door really is the only variable:

At 73" and across the whole standard line, glass means swing — there is no sliding version. So if the aisle is tight, the door style constrains the width you can buy, and that is worth settling before you fall in love with a cabinet size.

6. Sizing the run without guessing

You will find guides that tell you how many bottles fit in a cubic foot. Ignore them — a 12 oz can, a 12 oz long neck, a 750 ml spirit bottle and a 22 oz bomber do not stack alike, and the answer for your bar depends entirely on what you actually sell.

The method that works takes one shift:

• Count your restock, not your inventory. Note what goes into the back bar at open on your busiest night, and what has to be topped up mid-service. That volume is what the cabinet has to hold.
• Anything topped up mid-service is a sizing failure. A bartender walking to the walk-in during a rush is the cost you are trying to remove; size so a full open carries the night.
• Then add a door. Bars grow their list, not shrink it. The step from two doors to three is the cheapest capacity you will ever buy — on our standard line it is 20.4 to 29.1 cu ft, a 43% increase, for 21 3/8 inches of bar length.
• Split the run if the bar is long. Two cabinets at the two ends of a long bar beat one big cabinet in the middle, because they cut the walk, and when one goes down you are still pouring.

7. Electrical, clearance and install

• Standard 115 V. Every Polarman back bar cabinet runs on 115 V, single phase, drawing 3 amps — from the 49" two-door to the 90 3/8" three-door. No special supply anywhere in the line.
• Size the circuit off the data plate at the margin your local code requires, and give the cabinet its own circuit rather than sharing with the blender and the POS.
• Side-mounted compressor. Our whole line is side-mounted, which is the right arrangement for a back bar — the cabinet can sit tight against the back wall. Leave the service side reachable instead.
• The top is a work surface, so treat it like one. Anything you set on it that blocks the cabinet's airflow costs you temperature. Check the model's required clearance before you build a shelf above it.
• R290 refrigerant across the line — a hydrocarbon with a very low global warming potential, in a sealed listed charge. Nothing to do differently, but do not store solvents or aerosols against the machine.
• Weight and the path in. 263 lb at the small end, 474 lb for the 90 3/8" glass cabinet. Measure the door and the turn.

8. The Polarman back bar range

All 115 V / single phase / 3 A, R290, 33–41°F, side-mounted compressor, LED interior lighting. Heights are overall, legs included.

Shallow line — 24 7/16" deep

Standard line — 27 5/8" deep

Every cabinet carries 1 year labour, 2 years parts and 5 years on the compressor part.

9. Sizing it in one line

• Narrow back run or a walkway to protect — the shallow line at 24 7/16", and spend the extra couple of inches of length instead
• Depth available, length tight — the standard line at 27 5/8", which holds more per inch of bar
• Small bar, one station — 49" two-door, 12.5 cu ft
• Typical neighbourhood bar — 58 3/4" or 61" two-door, 16.2–16.6 cu ft
• Volume bar or a long list — 69" to 73", 20.4–20.8 cu ft
• High volume, or you restock mid-shift today — 90 3/8" three-door, 29.1 cu ft
• Guest-facing, LED lit — glass doors; anywhere out of sight — solid
• Narrow aisle — sliding glass, which means 49" or 61" on the shallow line
• Under a bar top or an overhang — check your clearance against 41 3/4" shallow / 42 1/2" standard, legs on