A glass door upright chiller or freezer is physically in place, but the installation is not closed until two things are confirmed: the cabinet sits level on the floor, and every door closes evenly across its seal. Both checks live in the short window between final positioning and the first shelves going in, and both are far easier to correct now than after a run of cabinets is loaded and trading. This guide follows the checks in the order a store team and installer perform them, from the first level reading to the sign-off note, and it keeps every tolerance where it belongs — in the model's own documentation rather than in a remembered rule.
Level before the first shelf goes in
The level check comes before stock because a cabinet that is only slightly out of level will show the fault more clearly once the doors are hanging and the shelves are weighted. An empty cabinet gives a clean reading; a loaded one hides the cause, because a door that will not close could be the floor, the cabinet frame, or the weight sitting on a shelf. Settle the cabinet in its final position first, then read it.
Level here means two things at once. The cabinet should stand so that the doors hang straight and the shelves, once fitted, sit flat rather than tilting toward a low corner. That is a frame condition, and it is read with a spirit level placed on a known flat reference surface, such as the top of the cabinet or a bare shelf rail, in both the front-to-back and the left-to-right directions. A reading taken only once across the top can miss a twist in the frame, so the check is a pair of readings, not a single glance.
Reading level in two directions
Read the cabinet front-to-back first, then side-to-side. The front-to-back reading shows whether the cabinet leans toward the shopper or toward the wall; the side-to-side reading shows whether one end sits lower than the other across a run. A cabinet that is level in one direction but not the other still puts uneven pressure on the frame, the hinges, and the door seals, so both directions matter before the doors are judged.
Where the cabinet has adjustable feet or levelling legs, the correction is a small rotation on the low side rather than a shim pushed under a corner at random. The aim is to bring the cabinet to a stable, level standing before the doors are closed for the first time. The exact method for a given model — how the feet adjust and which surface the manufacturer names as the reference — comes from the model's installation documentation, so the team checks that document instead of assuming every cabinet levels the same way.
Door-gap evenness across a multi-door run
With the cabinet level, the door gaps become the check that matters. On a multi-door cabinet, the visible gap between each door and its neighbour, and between the door and the frame, should read as even from top to bottom. An even gap is a straight, consistent line; an uneven gap widens at one corner and narrows at the other, and it usually points back to the frame or the hinge rather than to the door itself.
Walk the full run and compare the gaps rather than checking one door in isolation. A single door that hangs lower than the doors beside it, or a gap that tapers, is the sign to record. The store's job at this point is observation, not correction: note which door, which gap, and whether the change is at the hinge side or the latch side. That note is what the installer works from, and it is worth more than a general "the doors look off."
Hinge adjustment belongs to the installer
This is the division of labour that keeps a handover clean. The store records what it sees — a door that brushes the frame, a gap that tapers, a seal that does not meet the cabinet along its full length — and the installer confirms and corrects it. Hinge adjustment is installer work because it changes how the door hangs and how the seal seats, and getting it wrong can trade one alignment fault for another.
The store-side note therefore separates what was seen from what was fixed. It records the cabinet position, the door or bay identity, the visible fault, and the installer's confirmation that the door now closes and seals evenly. If the installer adjusts a hinge, that adjustment is recorded against the door it affected, so the next shift or the next service visit knows what was touched and why. The store does not attempt the adjustment itself unless the model's documentation and the installer's handover both support that.
Joining adjacent cabinets in a lineup
A glass door upright rarely stands alone; it usually joins a run, and the run has its own alignment standard. Adjacent cabinets should line up at the front face and along the top so the run reads as one continuous front rather than a series of steps. A height difference of a few millimetres between two cabinets shows immediately at the door line and the top trim, and it is the kind of fault that is easy to fix before the run is merchandised and nearly impossible to hide afterward.
Joining is also where level meets neighbour. Two cabinets that are each level on their own can still meet at a slight step if their feet are set to different heights, so the run is checked as a whole after each cabinet is checked alone. The gap where two cabinets meet should be straight and consistent, and any trim or join piece should sit without forcing. When a replacement cabinet is joining an existing lineup, the new cabinet is brought to the line of the ones already standing, which is a survey question rather than a levelling guess — the replacement survey for an existing lineup covers that earlier step.
The sign-off note
The handover record is where the checks become durable. A short sign-off note is enough when it names the right things: the cabinet model and position, the level reading result in both directions, the door-gap result across the run, any hinge adjustment the installer made, and the confirmation that the doors close and seal evenly before stock goes in. A note that says only "installed" tells nobody anything; a note that names the doors and the readings gives the store a baseline to hold against later.
That baseline matters because doors are opened hundreds of times a day. A door that was aligned at handover and later starts to drop can be compared against the sign-off note, which shortens the argument about whether the fault arrived with the cabinet or developed in use. The note also slots into the wider set of records the store keeps for the refrigeration project, alongside the handover document register the project already maintains.
Confirming tolerances from the model documentation
The one thing this guide deliberately leaves out is a universal "acceptable" gap or a single levelling tolerance. Door gaps, frame twist, and level tolerances are model-specific, and the figure that matters is the one the supplier documents for the exact cabinet standing in the store. Confirm that number from the model's installation documentation, and treat a remembered figure from a different cabinet as a starting question, not a fact. Where the installer and the store disagree about whether a door is "close enough," the model's documented tolerance is the tie-breaker, not an opinion.
The same discipline applies to the floor. A concrete slab, a tiled floor, and a raised plinth each behave differently under a cabinet's weight, and the supplier's guidance for the model says which surfaces and which foot settings are expected. The checks themselves stay the same across the glass door upright family — a remote standard glass door chiller / freezer, a bottom-compressor glass door cabinet, and a top-light-box glass door cabinet all pass through the same level-and-align sequence, with the differences living in the foot design and the door count rather than in the checking method.
Where door swing sits in the same handover
Level and gap are only two of the checks that close a first installation. Whether each door has room to swing through its full arc without striking a wall or an end panel is a separate question, and it is covered in the door swing and end-wall clearance guide rather than repeated here. A cabinet can be perfectly level with evenly seated doors and still fail on swing, so the two checks run side by side at handover instead of one standing in for the other.
The purpose of the whole sequence is a cabinet that reads as finished before the first tray goes in: level on the floor, straight across the run, with doors that close and seal evenly and a sign-off note that records all of it. When the store and installer confirm those points together against the model's documentation, the handover closes cleanly, and any drift that appears later has a written baseline to compare against.