Allied Moulded Vapor Seal: Air-Sealed Boxes for Walls and Fixture Support
Electrical openings are one detail to consider when planning an energy-efficient home. Allied Moulded’s flexBOX® Vapor Seal® line addresses air infiltration at electrical boxes, with options for wall devices and fixture support.
Air-Sealing Features Built Into the Box
The products featured in the flyer combine polycarbonate new-work construction with a Thermoplastic Polyester Elastomer (TPE) flange and sealed TPE clamps. According to the flyer, the sealed clamps eliminate the need for caulk or additional sealing at those clamps.
P-442NV: A Two-Gang Wall Box
The P-442NV is a two-gang Vapor Seal electrical box for use with nonmetallic sheathed cable. Its 43-cubic-inch volume provides space for two-gang applications, while leveling ribs and molded-in splined device holes support installation.
The TPE flange accommodates single-layer ½-inch or ⅝-inch drywall.
Round Fixture Boxes with Mounting Options
The PC234-NV and PC234-NGV are 4-inch-diameter round fixture-support boxes. Both offer 23 cubic inches of volume and a 50-pound fixture rating. The PC234-NGV includes a grounding strap.
For installations requiring an adjustable bar hanger, the PC234-BHV and PC234-BHGV offer the same volume and fixture rating with an additional mounting option. The PC234-BHGV includes a grounding strap.
All four round models feature sealed TPE clamps, molded-in splined device holes, and a TPE flange for single-layer ½-inch or ⅝-inch drywall offset.
Match the Product to the Assembly
The flyer lists UL certification under ANSI/UL 514C and NEMA OS 4 energy-efficient box standards. Fire-resistance classifications depend on the model and assembly:
- P-442NV: Listed in the flyer for wall assemblies rated 2 hours or less, with at least 24 inches of horizontal separation.
- PC234 round models: Listed for floor-ceiling assemblies rated 2 hours or less; spacing between boxes in adjacent cavities may be reduced to 5½ inches under the applicable classification.
Use the manufacturer’s listing and the applicable UL fire-resistance details to confirm the requirements for your project.
Download the Product Flyer
Compare models, dimensions, construction details, and classifications in the Allied Moulded Vapor Seal Product Flyer (PDF).
For more information about available options, visit Allied Moulded’s Vapor Seal product page.
