Oldcastle Polymer
Our medium- to heavy-duty range of polymer concrete enclosures, delivering Tier 15 and Tier 22 rated utility access boxes for pedestrian and off-roadway applications such as parking lots and driveways.
Your Project Deserves Expert Attention

Overview
Medium and heavy-duty polymer concrete enclosures
Our polymer concrete enclosures deliver medium- to heavy-duty utility access in pedestrian and off-roadway applications that may be subject to occasional non-deliberate heavy vehicular traffic such as parking lots and driveways.
Engineered and optimized by our materials science experts to provide high flexural and tensile strength, these enclosures deliver robust Tier 15 and Tier 22 load ratings, providing water, energy and telecommunications professionals with reliable, durable vaults, splice boxes and meter boxes.
Available with straight or flared walls for increased lateral strength and below-ground volume, units may be modified easily in the field without the need for specialist tools.
Need different performance? Find out which of our underground enclosures gives you the load rating you need: Underground Enclosure Load Ratings
Try Duralite® for equivalent strength at half the weight.
Benefits
Strong, resilient, heavy duty
Our materials science experts developed our polymer concrete enclosures using a precise dry mix of select gravel and sand, which is bound with resin and a fiberglass fabric.
This mixture, combined with our manufacturing process, results in high flexural and tensile strength while keeping weight to a minimum.
Our Tier 15 and Tier 22 rated polymer concrete enclosures can withstand vertical loads up of to 22,500 lbs and lateral loads of up to 800 lbs/ft2.
If you require a lighter enclosure with comparable strength, consider Duralite® as an alternative.
Flexible design and installation options
Available in round, square and rectangular configurations, with straight and flared walls and a range of depth options, our polymer concrete enclosures provide enormous design flexibility, enabling engineers to accommodate a wide range of site requirements.
Modify easily in the field
Despite their high strength and durability, our polymer concrete enclosures may be modified easily in the field using standard power tools, with no need for specialist equipment.
Get it fast
Our nationwide network of plants means that we have the scale to manufacture and stock a full range of products, meaning we can get your polymer concrete enclosures to site when and where you need them—and our local teams will work with you to make sure you have all the support you need.
Technical Information
- Application: Pedestrian and off-roadway subject to occasional non-deliberate heavy vehicular traffic
- Load rating: ANSI/SCTE Tier 15 / Tier 22
- Vertical load: up to 22,500 lbs
- Lateral load: up to 800 lbs/ft2
- Materials: polymer concrete
- Cover: polymer concrete
- Dimensions, round: 10” diameter, 10” depth
- Dimensions, square/rectangular: 10”-48” width, 15”-72” length, 12”-36” depth (3” extension available)
* Depth may be increased by stacking units
Specs & Downloads
Helpful Information
Products
Name | Model | Height | Width | Length | Diameter | Downloads | Quote Generator | ||||
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Oldcastle Polymer 910 | 10” | ” | ” | 9” | View | Add | ||||
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Oldcastle Polymer 1118 | 18” | 11” | View | Add | ||||||
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Oldcastle Polymer 1212 | 12” | 12” | View | Add | ||||||
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Oldcastle Polymer 1324 | 24” | 13” | View | Add | ||||||
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Oldcastle Polymer 1730 | 30” | 17” | View | Add | ||||||
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Oldcastle Polymer 2424 | 24” | 24” | View | Add | ||||||
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Oldcastle Polymer 2436 | 36'” | 24” | View | Add | ||||||
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Oldcastle Polymer 3048 | 48” | 30” | View | Add | ||||||
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Oldcastle Polymer 3060 | 60” | 30” | View | Add | ||||||
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Oldcastle Polymer 3636 | 36” | 36” | View | Add | ||||||
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Oldcastle Polymer 4848 | 48” | 48” | View | Add | ||||||
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Oldcastle Polymer 0039 | ” | ” | 39” | View | Add | |||||
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Oldcastle Polymer 4872 | 36” | 48” | 72” | View | Add | |||||
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Oldcastle Polymer 3660 | 36” | 36” | 60” | View | Add | |||||
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Oldcastle Polymer 1015 | 18” | 15” | 10” | View | Add | |||||