Subterra Series Handholes
American-made, lightweight handholes engineered for durability, faster installs and more usable internal space. Tier-rated options from pedestrian to heavy-duty roadway.
BABA compliance for every BEAD-funded project
Product Introduction
A stronger, lighter alternative
More capacity. Less weight. Faster installs.
Norvant Subterra Max handholes give network builders a stronger, lighter alternative to concrete and fiberglass. An HDPE base paired with a glass-filled TPO lid delivers the load performance of traditional vaults at a fraction of the weight, so crews install faster and more safely, with fewer people and less lifting gear on site.
- Install faster and more safely with fewer people and less lifting gear on site.
- Meet or exceed ANSI/SCTE 77 load ratings from Tier 3 pedestrian through Tier 22 roadway.
- Use expanded internal capacity for slack storage, larger splice cases and future network growth.
- Qualify for BEAD-funded builds with BABA-compliant, American-made infrastructure.
- Add cable management, locating pucks and custom logo plates for a more organised field installation.
A stronger, lighter alternative
Subterra Max Handholes
Our Premium HDPE Handholes



Our lineup
Tier 22
24 x 36 x 24 inches
Tier 15
17 x 30 x 24 inches
Tier 3
24 x 36 x 24 inches
Intended use
High-demand applications, maximum strength + expanded internal capacity
Mixed infrastructure needs, balanced size + performance
Pedestrian-rated pull box for slack storage and larger splice cases
Tier rating
Exceeds ANSI/SCTE 77 2017 Tier 22
Exceeds ANSI/SCTE 77 2017 Tier 15
Tier 3 Pedestrian-rated
Sizes
17 x 30 x 24
Materials HDPE
Materials HDPE
Materials HDPE
Materials HDPE
Weight
Lid: 42 lb Base: 66 lb (24 or 36)
Base: 130 lb (45)
Lid: 42 lb Base: 66 lb (24 or 36)
Base: 130 lb (45)
Lid: 10 lb
Base: 27 lb
Compliance
BABA Compliant 3rd party certified
BABA Compliant 3rd party certified
BABA Compliant RUS Approved 3rd party certified
Technologies
Flared design with anti-heaving properties
Optional Extras
Subterra Max
Handholes
24 inches wide by 36 inches deep

Tier 22
24 x 36 x 24 inches
Intended use
High-demand applications, maximum strength + expanded internal capacity
Tier rating
Exceeds ANSI/SCTE 77 2017 Tier 22
Sizes
Materials HDPE
Materials HDPE
Weight
Lid: 42 lb Base: 66 lb (24 or 36)
Base: 130 lb (45)
Compliance
BABA Compliant 3rd party certified
Technologies
Optional Extras

Tier 15
17 x 30 x 24 inches
Intended use
Mixed infrastructure needs, balanced size + performance
Tier rating
Exceeds ANSI/SCTE 77 2017 Tier 15
Sizes
Materials HDPE
Materials HDPE
Weight
Lid: 42 lb Base: 66 lb (24 or 36)
Base: 130 lb (45)
Compliance
BABA Compliant 3rd party certified
Technologies
Optional Extras

Tier 3
24 x 36 x 24 inches
Intended use
Pedestrian-rated pull box for slack storage and larger splice cases
Tier rating
Tier 3 Pedestrian-rated
Sizes
17 x 30 x 24
Materials HDPE
Materials HDPE
Weight
Lid: 10 lb
Base: 27 lb
Compliance
BABA Compliant RUS Approved 3rd party certified
Technologies
Flared design with anti-heaving properties
Optional Extras
A stronger, lighter alternative
Choose the right tier
rating for your application
From pedestrian FTTH environments to roadway and high-traffic sites, each tier is engineered around the load, workspace and installation needs of the project.
Our Flagship heavy-duty but light handhole for roadway and high-traffic sites. Maximum strength and expanded internal capacity, engineered to exceed ANSI/SCTE 77 Tier 22.
The Subterra Max Tier 15 handhole in the 32x44x45 internal size is the deep option in the mid-tier line. Its 45-inch depth gives the most internal volume in the Tier 15 range, with room for large coils and multiple splice cases. The HDPE base and Impact Modified Resin lid hold Tier 15 loads. At around 172 lb it may warrant a lifting aid on placement.
The Subterra Max Tier 22 handhole in the 32x44x45 internal size is the deep-vault option in the flagship line. Its 45-inch depth gives the most internal volume in the range, with room for large coils, multiple splice cases and years of network growth. The HDPE base and Impact Modified Resin lid hold concrete-grade Tier 22 loads. At around 172 lb it may warrant a lifting aid on placement.
The Subterra Max Tier 22 handhole in the 24x36x24 internal size is Norvant's flagship enclosure for roadway and high-load sites. An HDPE base and Impact Modified Resin lid deliver concrete-grade load performance at around 108 lb, so a small crew installs faster and more safely. This mid-footprint size handles everyday splice and slack work, with room for cable management, a locating puck and custom branding.
The Subterra Max Tier 3 handhole in the 17x30x24 internal size is a lightweight, pedestrian-rated pull box for FTTH and access builds. At around 37 lb, one person can place it, and a flared, anti-heaving design keeps it stable through freeze and thaw. Inside there is workspace for slack storage and larger splice cases, with locating puck, custom branding and color options.
The Subterra Max Tier 15 handhole in the 32x44x24 internal size widens the working footprint for mixed-load sites while keeping a 24-inch depth. The HDPE base and Impact Modified Resin lid hold Tier 15 loads at around 108 lb. The larger plan area suits multi-duct entries and bigger splice cases in utility corridors and shoulders, with cable management, locating puck and branding options.
The Subterra Max Tier 15 handhole in the 24x36x24 internal size is the mid-tier workhorse for mixed-load sites that need more than pedestrian performance without the cost of Tier 22. The same HDPE base and Impact Modified Resin lid keep it light at around 108 lb and quick to install. A smooth sidewall locks it into backfill and stops settling, with cable management, locating puck and branding options.
The Subterra Max Tier 22 handhole in the 32x44x24 internal size gives crews a wider working footprint than the 24x36 while keeping a 24-inch depth. The HDPE base and Impact Modified Resin lid carry concrete-grade Tier 22 loads at around 108 lb. The larger plan area suits multi-duct entries and bigger splice cases on roadway and high-load routes, with cable management, locating puck and branding options.
Valueline Alternative
Subterra Pro Handholes
Subterra Pro puts day one cost first: a composite handhole range built around the essentials.


Our lineup
Tier 22
24 x 36 x 24 inches
Tier 15
17 x 30 x 24 inches
Intended use
Value line for roadway and high-traffic sites; Tier 22 strength at a lower day-one cost
Value line for mixed-load sites; essential Tier 15 performance at a lower day-one cost
Tier rating
Built to ANSI/SCTE 77 Tier 22
Built to ANSI/SCTE 77 Tier 15
Sizes
Materials
Materials HDPE
Materials HDPE
Weight
Compliance
BABA compliant BEAD eligible
BABA compliant BEAD eligible
Technologies
Optional Extras
Subterra PRO
Subterra Pro Handholes
Subterra Pro puts day-one cost first: a composite handhole range built around the essentials.
Valueline Alternative
Choose the right tier
rating for your application
The Subterra Pro value line puts day-one cost first: a composite handhole range built around the essentials, for projects where the upfront number matters most.
Our Value Tier 22 Composite Handhole for roadway and high-traffic sites.
The Subterra Pro Tier 15 handhole in the 13x24x18 size is a value composite enclosure for mixed-load sites where day-one cost matters most. An FRP base with an RTM or polymer concrete lid cover the essentials at a lower upfront price, without dropping below the Tier 15 load class the site needs. This compact size suits access points and smaller splice work, with locating puck and custom branding options.
The Subterra Pro Tier 22 handhole in the 30x48x36 size is the largest value composite enclosure in the range, giving crews the most internal capacity for slack coils and multiple splice cases. A fiber composite base and RTM lid deliver certified Tier 22 load performance for roadway and aggregation points. It keeps day-one cost down, with locating puck and custom branding options.
The Subterra Pro Tier 22 handhole in the 24x36x24 size is the full-size value composite enclosure for roadway and high-traffic routes. A fiber composite base and RTM lid deliver certified Tier 22 load performance with generous room for slack and splice cases. It keeps the value line's day-one cost advantage, with locating puck and custom branding options.
The Subterra Pro Tier 22 handhole in the 17x30x24 size is the mid-size value composite enclosure for roadway and high-traffic sites. A fiber composite base and RTM lid deliver certified Tier 22 load performance with more internal room than the compact sizes, suited to standard splice and slack work under load. Keeps day-one cost down, with locating puck and custom branding options.
The Subterra Pro Tier 22 handhole in the 12x18x12 size is the smallest, lowest-cost enclosure in the value composite Tier 22 range. A fiber composite base and RTM lid deliver certified Tier 22 load performance for roadway and high-traffic access points, keeping day-one spend down. It accepts locating puck and custom branding options for field identification.
The Subterra Pro Tier 22 handhole in the 13x24x18 size is a compact value composite enclosure for roadway and high-traffic access points. A fiber composite base and RTM lid deliver certified Tier 22 load performance while keeping the day-one price down. This size suits smaller splice and drop work under load, with locating puck and custom branding options.
The Subterra Pro Tier 15 handhole in the 12x18x12 size is the smallest, lowest-cost enclosure in the value composite Tier 15 range. An FRP base with an RTM or polymer concrete lid cover the essentials for shallow access points and drop work, keeping day-one spend to a minimum without dropping below the Tier 15 load class. It accepts locating puck and custom branding options for field identification.
Our Value Tier 15 handhole for mixed-load environments.
The Subterra Pro Tier 15 handhole in the 13x24x18 size is a value composite enclosure for mixed-load sites where day-one cost matters most. An FRP base with an RTM or polymer concrete lid cover the essentials at a lower upfront price, without dropping below the Tier 15 load class the site needs. This compact size suits access points and smaller splice work, with locating puck and custom branding options.
The Subterra Pro Tier 15 handhole in the 12x18x12 size is the smallest, lowest-cost enclosure in the value composite Tier 15 range. An FRP base with an RTM or polymer concrete lid cover the essentials for shallow access points and drop work, keeping day-one spend to a minimum without dropping below the Tier 15 load class. It accepts locating puck and custom branding options for field identification.
Beyond Products
Building The
Future
Infrastructure is more than components it is the foundation for opportunity, resilience, and growth. At Norvant, we believe smarter infrastructure accelerates connectivity, strengthens communities, and enables progress at scale. By reducing friction in deployment and improving long-term reliability, we help ensure critical networks are built faster, perform better, and serve the people who depend on them.

Beyond Products
Building The
Future
Infrastructure is more than components it is the foundation for opportunity, resilience, and growth. At Norvant, we believe smarter infrastructure accelerates connectivity, strengthens communities, and enables progress at scale. By reducing friction in deployment and improving long-term reliability, we help ensure critical networks are built faster, perform better, and serve the people who depend on them.







