Use external mounting feet or brackets whenever the enclosure design provides them. They transfer the load to the brick without adding holes through the enclosure’s water barrier. Through-body mounting is an alternative only when the manufacturer permits it and specifies a suitable sealing method. Start by identifying the wall construction and the approved mounting points. Neither a masonry anchor nor a bead of sealant makes an unsupported enclosure modification acceptable.
What you need
Have the enclosure mounting drawing and the anchor installation instructions before marking the brick. The enclosure mounting guide covers mounting height, access and working-space fundamentals; this procedure addresses the brick connection and water barrier.
Gather these items:
- The specified mounting feet, brackets and enclosure attachment screws.
- Anchors documented for the actual masonry, exposure and installed load.
- Approved spacers or stand-offs where the mounting arrangement requires them.
- A level, measuring tools and a template showing the mounting-hole centers.
- The drill, masonry bit, hole-cleaning equipment and tightening tools specified for the anchors.
- Sealing hardware specified for any permitted penetration through the enclosure body.
- Separate supports for conduit and heavy cable runs where required.
Identify whether the wall is solid brick, hollow masonry or brick veneer over another structure. Anchor performance depends on the base material, its condition, embedment, spacing and distance from edges. A fixing intended for solid concrete is not automatically suitable for brick.
Choose the mounting load path
| Mounting arrangement | Where the load travels | Water-barrier requirement |
|---|---|---|
| External feet or brackets | Enclosure attachment points, brackets, masonry anchors | Use the specified enclosure screws without creating unintended openings |
| Approved through-body mounting | Sealed body penetrations, mounting hardware, masonry anchors | Seal each penetration using the manufacturer’s permitted detail |
| Fixing through veneer to structural backing | Engineered bracket or stand-off system, structural backing | Address the enclosure seal and building-wall weather barrier separately |
A wall anchor does not have to pass through the enclosure body. With external feet, the masonry fixing sits outside the sealed compartment. Conversely, concealed fixings through the enclosure back create penetrations even when the screw heads remain indoors within the box.
Mounting steps
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Make the installation safe and establish the complete load.
Isolate existing circuits, prevent re-energization and verify absence of voltage before disturbing wiring or drilling near electrical equipment. Locate concealed services before drilling the wall. Include the enclosure, backplate, installed devices and supported wiring in the mounting load. Door opening and cable pull can add loads that an empty-box weight does not represent. Do not select anchors from enclosure weight alone.
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Confirm that the brick can carry the installation.
Check for cracked units, loose masonry, deteriorated mortar and uncertain veneer support. Select an anchor with published suitability for the actual base material and installation conditions. Follow its restrictions on drilling location, edge distance, spacing and embedment. Do not assume mortar joints provide the same capacity as brick. Where veneer or damaged masonry cannot support the installation, establish a suitable structural mounting detail before proceeding.
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Identify the enclosure’s intended mounting points.
Match the supplied feet and screws to the mounting drawing. A dimple, recess or casting mark is not permission to drill or force a screw through the body. Some designs use blind attachment points; others use different arrangements. Use only the specified screw diameter and length. An overlong replacement can turn a blind attachment into a leak path. Do not use an impact driver unless the attachment instructions permit it.
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Set the position without twisting the enclosure.
Offer up a mounting template and check the door swing, cable routes and service access. Keep the mounting feet on a common plane. Rough brick faces can leave one foot unsupported or pull the enclosure out of square when tightened. Use manufacturer-permitted spacers or an appropriate mounting frame rather than drawing the body against uneven masonry. Keep the door sealing surface straight and the intended installation orientation unchanged.
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Drill and prepare the masonry holes separately.
Remove the enclosure from the drilling area so masonry dust cannot collect inside or damage its gasket. Drill to the diameter and depth specified for the selected anchor. Use the required drilling mode and hole-cleaning procedure; these vary with the anchor and masonry. Do not enlarge a misplaced hole or substitute another fixing without checking suitability. Position all anchors before committing to the final enclosure installation.
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Attach the external feet, or complete an approved sealed detail.
For external feet, fit the enclosure attachment screws exactly as documented, then secure the feet to the masonry anchors. Keep the masonry fixings outside the sealed compartment. If through-body mounting is explicitly permitted, use the specified hole locations, sealing hardware and tightening sequence. The seal must close the enclosure penetration against a suitable surface; an ordinary washer is not necessarily a sealing washer. The article on mounting screws through an outdoor enclosure explains this penetration detail further.
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Tighten without damaging the body or seals.
Support the enclosure while tightening and follow the specified installation torque for each connection. Anchor tightening and seal compression may have different requirements. Do not solve that conflict by tightening harder; use an approved assembly that accommodates both. Check that feet remain supported and the body stays square. If the door alignment changes as bolts tighten, stop and correct the mounting arrangement before continuing.
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Complete cable entry and bonding as separate tasks.
Install suitable glands or conduit fittings according to their instructions, and support connected wiring without loading the enclosure wall unnecessarily. A rear cable opening needs its own sealing detail, independent of the mounting feet. The article on sealing a junction box back entry without conduit addresses that arrangement. Complete required bonding using the enclosure grounding and bonding guide; masonry anchors do not replace an equipment grounding conductor.
Checks before energizing
Inspect the completed mounting while the equipment remains isolated. Confirm that every anchor is installed as specified and every mounting foot bears properly. Check that the enclosure cannot rock and that opening the door does not move the body.
Close and latch the door normally. Look for an even gasket contact pattern, trapped wires and changes in door alignment. Inspect any permitted body penetrations from both accessible sides, including the sealing surface beneath the hardware.
Check the wall above and behind the enclosure for concentrated runoff. Water management at the building surface is separate from sealing the enclosure itself. The article on sealing a junction box to brick against running water covers that distinction.
Do not treat an improvised hose test as proof of a rating. Follow any specified acceptance procedure without exposing energized equipment to water.
Mistakes that cost the rating
Our wall-mount enclosures are rated NEMA 4X / IP66 by the manufacturer; not UL listed. That statement does not establish the suitability of an undocumented mounting modification. Check project acceptance and listing requirements before ordering.
Avoid these mounting errors:
- Drilling the back for convenience. Concealed hardware is not a reason to disregard the approved mounting arrangement.
- Relying on sealant against rough brick. A perimeter bead does not replace a seal at a body penetration.
- Adding a drain hole without approval. A drain is a design decision, not an automatic remedy for a mounting leak.
- Overtightening to pull the enclosure flat. Distortion can prevent the door gasket from sealing evenly.
- Using unspecified attachment screws. Incorrect length or thread engagement can damage the mounting point or penetrate the compartment.
- Assuming the original rating covers every alteration. The completed assembly needs an appropriate rating basis after modification.
The explanation of enclosure ratings after cutting and mounting devices covers how openings and installed components affect the final assembly.
What to put on the mounting drawing
Specify the wall construction, complete installed weight, enclosure orientation and mounting-point coordinates. Identify the anchor system, masonry requirements, stand-off arrangement and permitted installation tolerances. Show cable entries separately from mounting holes, with a sealing detail for every permitted body penetration.
Our wall-mount enclosures have mounting feet, a hinged gasketed door and a removable mounting panel. Confirm the mounting drawing rather than substituting holes through the back.
For custom enclosures, include the required material, width, height, depth and every cutout in the drawing request. State whether external mounting is required and flag concealed-fixing constraints before drawing approval. Resolve the load path and sealing method together, rather than leaving either to field improvisation.
Enclosures for this job
Catalog sizes that suit the job this article answers, picked from its subject; open one for its full specifications.
| Enclosure | Material | Outside H x W x D / display | Rating |
|---|---|---|---|
| 12 × 10 × 6 in | 304 stainless | 12 x 10 x 6 in | Rated NEMA 4X / IP66 by the manufacturer; not UL listed |
| 16 × 14 × 8 in | 304 stainless | 16 x 14 x 8 in | Rated NEMA 4X / IP66 by the manufacturer; not UL listed |
| 20 × 16 × 8 in | 304 stainless | 20 x 16 x 8 in | Rated NEMA 4X / IP66 by the manufacturer; not UL listed |
Questions
Can you drill through the back of an enclosure to mount it on brick?
Use external mounting feet or brackets when the enclosure provides them. Drill through the body only when the manufacturer permits that mounting method and specifies suitable sealing details. Concealing the screw heads does not justify creating an undocumented penetration through the enclosure back.
Which anchors should you use for an enclosure on brick?
Select anchors with documented suitability for the actual brick construction, installed load and outdoor exposure. Solid brick, hollow masonry and veneer need different considerations. Follow the anchor instructions for embedment, hole preparation, spacing and edge distance rather than choosing from screw diameter alone.
Does silicone behind the enclosure seal the mounting screws?
Not necessarily. Sealant at the building surface manages a different water path from a sealed enclosure penetration. External feet usually keep masonry fixings outside the compartment. Any rear cable entry or permitted mounting penetration still needs its own appropriate sealing detail.
Can enclosure anchors go into the mortar joints?
Only use mortar joints when the selected anchor system has suitable documented performance for that base material and its condition. Do not assume a joint provides the same capacity as brick. Weak mortar, damaged brick or uncertain veneer support requires a different mounting arrangement.
