Deep vs Medium Supers: Which Should You Buy?

Run all mediums if you lift alone. Every box in the apiary is the same height, every frame fits every box, and the heaviest routine lift drops from roughly 90 lbs to roughly 50. Run deeps for brood and mediums for honey if you already own deeps, because there is no sense discarding working equipment, and the conventional two-deep brood chamber is genuinely good at housing a brood nest. Run all deeps only if you have a reliable second pair of hands and specifically want the fewest boxes and the lowest cost per unit of comb.

What we would not do is start a new apiary on deeps because that is what the starter kit came with. Format is a decade-long decision and the starter kit was optimizing for shipping cost, not your shoulders.

Here is the number that drives everything else. Weights are listed estimates for full 10-frame boxes of bees, comb, and honey, which is the state you actually lift them in.

Box	Nominal height	Full, 10-frame	Full, 8-frame	What it feels like
Deep	9-5/8 in	About 80 to 90 lbs	About 65 lbs	A two-person lift done by one person
Medium	6-5/8 in	About 50 lbs	About 40 lbs	A bag of dog food, carried carefully
Shallow	5-11/16 in	About 40 lbs	About 32 lbs	Easy, but you need a lot of them

Now count the repetitions. A full inspection means lifting every box above the one you want to look at, and setting it down, and picking it back up. Three inspections a month through a season, two colonies, five years. The deep format asks your lower back for a 90 lb effort several hundred times, often at an awkward angle over an open hive with bees in the air. The medium format asks for 50.

Beekeepers rarely quit because of bees. They quit because of bodies, and the injury is almost always a box.

Weight is the argument that sells mediums. Interchangeability is the argument that keeps people on them.

In an all-medium apiary there is exactly one frame depth. That means a frame of capped brood from a strong hive can be donated to a weak one without checking whether it fits. It means a frame of honey pulled off a super in August can be dropped into a brood box in November as winter stores. It means a split made in May uses whatever frames are on the truck. It means the extractor basket takes every frame you own. It means the spare shelf in the shed holds one kind of box and one kind of frame.

In a mixed apiary, none of those are automatic. You check depth before every move, you keep two sets of spares, you discover in May that the frames you have are the wrong ones, and you buy a second bulk pack of frames you did not budget for. None of it is fatal. All of it is friction, and friction is what stops inspections from happening on schedule. That matters, because skipped inspections and skipped mite checks are what national loss surveys from the Bee Informed Partnership keep pointing back to when they report annual US colony losses in the 40 to 50 percent range.

The conventional brood chamber in most of the United States is two 10-frame deeps, which gives a colony room for brood, pollen, and enough honey to overwinter. If you are converting that to mediums, the rule of thumb is three mediums per two deeps, based on the ratio of frame depths: a deep frame is roughly nine and an eighth inches tall against a medium's six and a quarter, so three mediums come very close to two deeps of comb area.

Traditional setup	All-medium equivalent	Frames total
1 deep brood box	About 1.5 mediums	10 deep vs 15 medium
2 deep brood boxes	3 mediums	20 deep vs 30 medium
2 deeps plus 2 medium supers	5 mediums	Same honey capacity

Two practical notes. In the far North some beekeepers run four mediums as a brood chamber rather than three, to guarantee winter stores. And a winter cluster moves upward through stored honey, so with mediums you have more box junctions for the cluster to cross; keep the stack tight, keep frames pushed together, and do not create gaps the cluster has to bridge in January. Our cold climate guide covers the northern version of this in more detail.

Here is where we give the deep format its due, because the economics genuinely favor it. Box prices are nearly identical across formats: our deep pick is $45.04 and the medium is $44.99, five cents apart. But the deep holds substantially more comb. Roughly speaking, a deep frame gives you about half again the comb area of a medium.

Building a brood chamber	Two deeps	Three mediums
Boxes	2 at about $45	3 at about $45
Box subtotal	About $90	About $135
Frames needed	20	30
Frames at 20 for $56.99	About $57	About $85
Approximate total	About $147	About $220

Call it seventy-odd dollars more per hive to run mediums, plus more frames to assemble and more foundation to buy. That is the honest cost of the format, and anyone telling you mediums are free is selling something. Our view is that seventy dollars per hive is a reasonable price for a lift you can still do at seventy years old, but you should know you are paying it. The full budget picture is in our cost index.

Neither depth is sacred. L. L. Langstroth's 1852 movable-frame hive established the principle that matters, bee space of roughly three eighths of an inch, and American suppliers then standardized box heights around it for manufacturing convenience. The deep became the default brood box, mediums and shallows became honey supers, and the convention stuck.

The all-medium apiary is a later adaptation by beekeepers who noticed that nothing in the biology requires two box heights. Colonies raise brood in mediums perfectly well, store honey in deeps perfectly well, and have no opinion about the wood. The formats are a human convenience, which is exactly why you should choose them on human criteria.

Harvest is where format shows up hardest. A full medium super is about 50 lbs and you carry it from the hive to the truck to the extracting room. A full deep of honey is about 90 lbs and you do the same trip. Most beekeepers who harvest from deeps only do it once before they buy mediums.

Extractors care too. Many hobby extractors take medium frames comfortably and deep frames only in larger baskets, so committing to deeps for honey narrows your machine options and raises the price. If you have not bought one yet, read our extractor size guide before you settle the box question, because the two decisions are joined. The machines themselves are ranked in the extractor roundup.

One more handling note: whichever format you run, get the hive on a stand at a sensible working height. Lifting a 50 lb box from ankle level is worse than lifting a 90 lb box from waist level. Stands are covered in our stands and wraps guide.

Most beekeepers do not choose a format so much as accumulate one: a starter kit with two deeps, a mentor's spare mediums, a friend's retired equipment. If that is you, do not start over. Do this instead.

Step one: designate the deeps as permanent brood boxes and stop buying more of them. Step two: standardize everything above the queen excluder on mediums, so every honey super in the yard is identical and every honey frame interchanges. Step three: as deeps wear out, replace them with pairs of mediums rather than with new deeps, and let the apiary converge over five or six years without a single expensive changeover. Step four: keep the two frame inventories physically separate in the shed, labeled, so you never carry the wrong pack out to a hive.

If you want to convert faster, the cleanest method is to move a deep brood chamber up over a new medium chamber, let the colony work down into the mediums over a season, then remove the deeps once the brood has moved. It takes a full year and it works. Splits are the other painless route, since a new colony can start life in whatever format you want; our splitting guide covers the mechanics.

Deeps deserve better than the caricature. A brood nest is a continuous three-dimensional structure, and a colony expanding across a box junction has to bridge a gap where there is no comb. Two deeps interrupt that structure once. Three mediums interrupt it twice. In practice colonies manage both, but the deep arrangement is marginally more natural and marginally better for a cluster moving upward through winter stores.

Deeps also win on the practical side of the hobby's social infrastructure. Mentors demonstrate on deeps. Clubs loan deep equipment. Nucs almost always arrive on deep frames, which means an all-medium beekeeper installing a nuc has to keep at least one deep box around to house it until the colony moves up. That is a real annoyance and worth planning for; our nuc installation guide covers the workaround.

And they are cheaper per unit of comb, as the table above showed. If you have a partner who helps with harvest and inspections, the deep format is genuinely the more efficient choice and we would not argue you out of it.

Pick all mediums if: you work your hives alone; you are over fifty or managing a back, shoulder, or knee; you plan to run more than two colonies; you want one frame inventory and one spare shelf; or you are starting from zero this year and can choose freely. Start with the MayBee Medium Super Box at $44.99 and buy them in threes.

Pick deeps for brood if: you already own them; you have reliable lifting help; you want the lowest cost per unit of comb; or you are buying nucs every spring and want boxes that take nuc frames directly. Start with the MayBee Deep Brood Box at $45.04, or the ThxBees cedar deep at $39.99 if price is the constraint.

Whatever you pick, pick supers in mediums. Almost nobody who has carried a full deep of honey across a yard does it a second time by choice.

For a new single-hive setup this spring, running solo: three MayBee Medium Super Boxes for the brood chamber at $44.99 each, two more for honey by midsummer, and enough frames to fill them. Two packs of the MayBee 20 Pack Frames at $56.99 covers four boxes and leaves spares on the shelf.

For someone who already runs deeps: keep them, buy no more of them, and standardize honey supers on mediums from now on. Add one ThxBees cedar deep at $39.99 as the spare that lets you install a nuc or make a split without an emergency order, then let the yard converge on mediums as old deeps retire.

Decide the width question at the same time if you have not: the 8-frame versus 10-frame comparison is the other half of this decision, and an 8-frame medium at roughly 40 lbs full is the lightest sane box in beekeeping. Then get the frames right with our foundation comparison, and put the whole stack on a proper floor using the bottom board comparison.