{"id":466,"date":"2026-09-23T09:59:48","date_gmt":"2026-09-23T01:59:48","guid":{"rendered":"http:\/\/www.deltafms.com\/blog\/?p=466"},"modified":"2026-09-23T09:59:48","modified_gmt":"2026-09-23T01:59:48","slug":"can-a-pass-through-box-be-installed-in-a-wall-4dc0-43a294","status":"publish","type":"post","link":"http:\/\/www.deltafms.com\/blog\/2026\/09\/23\/can-a-pass-through-box-be-installed-in-a-wall-4dc0-43a294\/","title":{"rendered":"Can a Pass Through Box be installed in a wall?"},"content":{"rendered":"

If you\u2019ve ever wandered around a busy warehouse, a hospital wing, or even a small office that\u2019s juggling deliveries and staff movement, you\u2019ve probably noticed one of the unsung heroes of efficiency: pass through boxes. These unassuming, box-shaped fixtures do one simple, critical job \u2014 move items between two spaces without opening a full door, disrupting climate control, or letting staff traffic spill into areas it shouldn\u2019t \u2014 but the question I get asked most often as a pass through box supplier is this: Can a pass through box be installed in a wall? Pass Through Box<\/a><\/p>\n

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The short answer is yes. But like most things that make work easier, it\u2019s not just a matter of drilling a hole and sliding a box in. Over the 12 years I\u2019ve been supplying pass through boxes, I\u2019ve worked with everyone from small caf\u00e9 owners to large hospital facilities teams, and the successful installations? They follow a few basic, science-backed rules that keep the box secure, airtight, and functional for years. Let\u2019s break this down, because if you\u2019re even considering a pass through box for your space, getting this right will save you from headaches later.<\/p>\n

First, let\u2019s clarify what a \u201cwall\u201d actually is, because not all walls are the same, and that changes how a pass through box fits. When most people ask about installing in a wall, they\u2019re thinking of two main types: interior partition walls and exterior load-bearing walls. Each has its own set of rules, and ignoring those rules is one of the most common mistakes I see customers make before they even reach out to me.<\/p>\n

Interior partition walls are the most common fit for pass through boxes. These are the lightweight, non-structural walls you see in offices, restaurants, or hospital wings that don\u2019t hold up the building\u2019s floors or roof. Most are made of two layers of drywall over wooden or metal studs spaced 16 or 24 inches apart. For these walls, the installation is straightforward \u2014 but only if you measure right. A standard pass through box I supply is 12 inches wide, 12 inches tall, and 6 inches deep, so when you frame the wall opening, you need to cut a hole that\u2019s exactly 12 inches wide and 12 inches tall, centered between two studs. Cut the hole too big, and you\u2019ll have gaps that let air, noise, or even pests pass through; cut it too small, and the box won\u2019t fit. I always tell customers to double-check stud spacing before they cut \u2014 a tape measure and a stud finder takes 10 minutes, and avoids the headache of reworking a wall.<\/p>\n

For exterior walls, the rules get a bit stricter, and this is where I\u2019ve seen the most misinformation online. Exterior walls not only support part of the building\u2019s weight, they also act as a barrier against weather, temperature changes, and outside noise. If you install a standard interior pass through box in an exterior wall, you\u2019ll end up with gaps that cause drafts, higher energy bills, and even water damage over time. The solution here is a weather-rated pass through box, designed with insulated flanges that seal against the exterior wall\u2019s sheathing, and a foam gasket around the inner edge to keep conditioned air from escaping. I worked with a caf\u00e9 in rural Vermont two years ago that tried to use an interior box for their takeout pass through, and by the end of their first winter, they were paying $300 more a month in heating costs. We swapped it out for a weather-rated model, and that bill dropped back to its original amount within two months. That\u2019s the kind of real-world example I never get tired of sharing.<\/p>\n

Load-bearing walls? That\u2019s a different conversation entirely. A load-bearing wall holds up the building\u2019s structure \u2014 remove or modify it, and you risk sagging floors, cracked ceilings, or worse. I almost always advise against installing a pass through box in a load-bearing wall without a structural engineer\u2019s sign-off. In some cases, you can reinforce the wall with steel lintels above and below the pass through opening to take the weight that the wall was previously holding, but that\u2019s not a DIY job. I\u2019ve had a few customers ask if they can just cut a hole in a load-bearing wall and add a box, and I always say no \u2014 not only is it unsafe, it\u2019s a costly mistake to fix. If you\u2019re set on a pass through between two areas separated by a load-bearing wall, we actually work with contractors to design custom solutions that use existing structural openings, like window bays, to mount the box without modifying the load-bearing structure.<\/p>\n

Now, beyond the type of wall, there are a few key factors that make any pass through box installation successful, and these apply whether you\u2019re working with a 2×4 interior wall or a 12-inch thick exterior concrete wall. First, depth. A pass through box needs enough depth to hold standard items \u2014 a coffee cup, a medical specimen container, a small package \u2014 so if your wall is only 4 inches thick, you\u2019ll need a shallow-depth custom box, or you\u2019ll end up with items falling out the back of the box. I once supplied a small boutique with a standard 6-inch deep box for their counter pass through, and they had to return it because their walls were only 5 inches thick. We swapped it for a 4-inch deep model in 48 hours, no extra cost, because getting the depth right is non-negotiable.<\/p>\n

Second, sealing. This is where a lot of budget boxes fall short. A good pass through box should have a rubber or foam gasket on both the inner and outer doors, to eliminate gaps. For spaces that need controlled air flow \u2014 like hospital sterile areas, commercial kitchens, or server rooms with strict temperature requirements \u2014 an airtight seal is essential. I supply a model with a magnetic door closure, so when the door shuts, it pulls tight against the gasket, creating an almost airtight seal. That\u2019s a big deal: in a hospital, where cross-contamination is a risk, a gap in a pass through box can let bacteria move between a patient ward and a supply room. In a commercial kitchen, it keeps grease odors from seeping into the dining area. I always make sure customers understand that sealing isn\u2019t an afterthought \u2014 it\u2019s part of what makes the box work.<\/p>\n

Third, mounting. You can\u2019t just set a pass through box in a wall opening and walk away. It needs to be secured properly, with either screws through the flanges on the sides of the box, or adhesive for drywall walls, but only if the wall is lightweight. For concrete or cinder block walls, I recommend using masonry screws to hold the box in place, because those walls are heavier, and the box will shift over time if not mounted securely. I\u2019ve seen boxes fall out of walls because someone used drywall screws on a concrete wall, and that\u2019s a dangerous and avoidable mistake.<\/p>\n

Over the years, I\u2019ve also had customers ask about installing pass through boxes in other types of walls \u2014 like concrete block, brick, or even floor slabs. The answer is still yes, but you need the right tool for the job. A standard wood stud wall doesn\u2019t require anything fancy, but a concrete wall needs a diamond-tipped core drill to cut a clean, even hole. Trying to cut a concrete wall with a regular saw will leave rough edges and gaps, which you\u2019ll have to seal with caulk or foam, and that\u2019s not as reliable as a clean core drill cut. A core drill rental is worth every penny if you\u2019re working with concrete, because it ensures the box fits snugly and seals correctly.<\/p>\n

I know a lot of people search for DIY guides online for installing pass through boxes, and while small interior installations can be done by handy homeowners, I always recommend working with a qualified contractor or a trusted supplier like me for larger or more high-stakes installations. A friend of mine who runs a small veterinary clinic tried to install a pass through between their exam room and storage room on their own, and ended up cutting the hole too high, so the door wouldn\u2019t open all the way. It took three hours to fix, and he could have avoided that with a simple call to a supplier who knows the rules.<\/p>\n

At the end of the day, a pass through box is more than just a piece of equipment \u2014 it\u2019s a tool that improves safety, efficiency, and even energy use. Whether you\u2019re running a busy retail space, a medical facility, a warehouse, or a small office, installing one in a wall is absolutely possible, as long as you follow the right guidelines for your specific wall type, and choose a quality box designed for your space.<\/p>\n

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If you\u2019re considering a pass through box for your own space, don\u2019t waste time guessing if it will work. Our team has years of experience working with every type of wall, from thin interior drywall to thick exterior concrete, and we can help you design the right solution for your needs \u2014 whether that\u2019s a standard model, a weather-rated option, or a custom size for a unique wall thickness. We work with contractors, facility managers, and small business owners alike, and we\u2019re always here to answer questions, share real-world examples, and help you avoid the common mistakes that come with installing a pass through box for the first time. Reach out to our team to discuss your project, and let\u2019s find the right pass through box for your space.<\/p>\n

Machine-made Sandwich Panel<\/a> References<\/p>\n

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  1. National Fire Protection Association. (2021). NFPA 101: Life Safety Code. National Fire Protection Association.<\/li>\n
  2. American Society of Heating, Refrigerating and Air-Conditioning Engineers. (2022). ASHRAE Handbook \u2013 HVAC Applications. American Society of Heating, Refrigerating and Air-Conditioning Engineers.<\/li>\n
  3. International Code Council. (2021). International Building Code. International Code Council.<\/li>\n
  4. World Health Organization. (2020). Guidelines for the Prevention of Cross-Contamination in Health Care Facilities. World Health Organization.<\/li>\n<\/ol>\n
    \n

    Suzhou Jinye Air Purification Steel Structure Co., Ltd.<\/a>
    As one of the most professional pass through box manufacturers and suppliers in China, we offer a wide range of products with superior quality. Please feel free to wholesale durable pass through box for sale here from our factory.
    Address: No. 858 Jinsheng Road, Jinjiaba Town, Wujiang District, Suzhou City, Jiangsu Province, China
    E-mail: 18913057067@163.com
    WebSite:     https:\/\/www.suzhoujinye.com\/<\/a><\/p>\n","protected":false},"excerpt":{"rendered":"

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