Once you’re past a single backyard cage and into a multi-cage build (a school field house, a training academy, a warehouse conversion, or a backyard with room for three bays instead of one) you hit a design decision that doesn’t come up on a one-off job: do you build each cage as its own fully separate tunnel, or do you hang one large shell net over the whole footprint and split it internally with divider nets?
Both are real, buildable options. We’ve quoted both for school and training-facility projects. The right answer depends less on budget alone and more on how the space actually gets used day to day, plus a couple of physical realities about netting weight and access that don’t show up until the structure has been in service a season or two.
Two ways to enclose the same footprint
Individual tunnels. Each cage gets its own complete net, hung to its own frame bay, independent of the cages next to it. Three bays, three nets, three sets of hardware.
Shell net with dividers. One large net envelopes the whole footprint (all three bays, one continuous structure), and lighter-weight divider nets hang inside to separate the bays from each other. Less total netting for the same square footage, because the perimeter of one big rectangle is shorter than the combined perimeter of three small ones.
On paper the shell net looks like the efficient choice: less material, one structure instead of three. In practice, the two options trade one set of problems for a different set, and both sets are worth knowing about before you commit.
What each option actually costs
The netting yardage difference is real but it’s not the whole cost picture, and it’s not even the biggest lever. Our install labor is priced by crew-day ($1,800/day) on a tier tied to cage length (2 days up to 40 ft, 3 days up to 60 ft, 4 days at 65 ft and up, plus a day for concrete-set footings on HD or commercial frames), and then a width multiplier on top: 1.0x for a single-width cage, 1.6x for a double-wide build, 2.2x for triple-wide or more.
That width multiplier is where individual tunnels and a shared shell net really diverge, and it’s worth understanding why it exists before you assume the shell net is automatically cheaper.
Three individual 12-15 ft cages built as separate tunnels are, from a labor standpoint, three separate single-width builds. Each one gets its own 1.0x multiplier on its own length-tier crew-days: its own layout, its own anchor points, its own tensioning pass. Build that same total footprint as one continuous shell net instead, and it becomes a single double-wide or triple-wide job (one length-tier’s worth of crew-days at a 1.6x or 2.2x multiplier), not three separate setups stacked on top of each other.
That multiplier isn’t a markup for being wide. It’s real added labor: more cross-bracing to keep a 30-plus-foot span from racking, more intermediate support poles, more time truing up an anchor layout that has to hold one continuous structure instead of three shorter, independently-tensioned ones. Whether the shell net nets out cheaper or more expensive than three separate single cages depends on your exact footprint, length tier, and frame choice, and that’s genuinely a site-visit question, not something we’ll pretend to answer to the dollar in a blog post. What we can tell you honestly: don’t assume “less netting” automatically means “less labor.” Sometimes it does. Sometimes the wider structure eats the savings right back in bracing and anchor work.
The maintenance side nobody mentions until it matters
This is the part that doesn’t show up in a spec sheet, and it’s the reason we don’t just tell every multi-cage customer to go with the shell net and save on netting yardage.
Net weight on the support cables. A shell net spanning the full width and length of a three-bay footprint carries a lot more total netting weight on fewer, longer support cable runs than three shorter, independently-supported tunnel nets do. If the cable spec or the tensioning isn’t dialed in exactly right for that load, you get sag over time, and sag in a batting cage net isn’t cosmetic. It changes where the ball lands relative to the net face and it changes how the whole structure ages. Three separate tunnels spread that same total netting weight across three separate, shorter cable runs, each one easier to keep properly tensioned.
Retracting or opening for maintenance. Pulling back or opening a single divider net to get a crew into one bay, while the other two stay in use, is a quick, contained job. Retracting or opening a large shell net that wraps multiple sides of a three-bay structure for repair or replacement is a bigger operation, because you’re not isolating one panel, you’re working the whole envelope.
Bunching and sightlines. Netting that isn’t under perfectly even tension bunches up, usually at corners and seams, and that slack has to go somewhere. The more total netting a structure is carrying relative to its frame, the more surface area there is for that kind of slack to show up as a blind spot for a hitter, a coach, or a pitching machine operator tracking a ball. Individual tunnels, with less net per structure and cleaner independent tensioning, tend to hold a tighter, more predictable sightline over time.
None of this means the shell net is a bad option. It means it asks more of the install (correct cable spec, correct tensioning, real maintenance access planned in from the start) to avoid becoming the option you regret in year three.
Which one actually fits your facility
Individual tunnels tend to be the right call when:
- Multiple groups or teams use the space at the same time and you don’t want one bay’s maintenance or netting issue to take the others offline
- You want to mix netting gauges by bay (a lighter #42 for a tee-work station next to a #60 or #84 for a live-pitching bay that takes more abuse)
- Independent repair matters more than upfront netting cost. A torn net in one tunnel doesn’t touch the other two
A shell net with dividers tends to be the right call when:
- One team or group uses the whole footprint at a time, so the internal divisions are about organizing space, not isolating separate users
- Total netting material and a single structure to maintain matter more than independent bay-by-bay repair
- The budget is tighter and the width multiplier math actually works out in your favor for your specific footprint and length tier
Backyard multi-bay builds usually land on individual tunnels, mostly because backyard footprints rarely hit the width where the multiplier math favors a shell net. Schools and training facilities are where this decision gets real money attached to it, and it’s exactly the kind of call we’d rather talk through on an actual site visit than guess at from a floor plan.
Get real numbers for your footprint
If you’re sizing this out for a backyard multi-bay build, run our cage configurator with your actual dimensions. It’ll walk you through frame, netting gauge, and surfacing and give you a real price range for your footprint, individual tunnels or otherwise.
If this is a school, ISD, or institutional multi-cage facility project, skip the configurator and go straight to our Spec Desk. Send us your scope or RFP and we’ll work the individual-tunnel-versus-shell-net decision into the actual bid spec, not a generic one.