Subterra Series Tier 3 Handhole (17x30x24 ID)
e.g. RUS
Approved
Compliant
Made in USA
Description
The Subterra Max Tier 3 handhole in the 17x30x24 internal size is a lightweight, pedestrian-rated pull box built for FTTH and access network builds in sidewalks, greenfield and other non-vehicle areas. An all-HDPE construction keeps total weight to around 37 lb, so one person can carry and place it without lifting gear, which speeds up drop-heavy routes where crews set many units in a day. A flared, anti-heaving base design keeps the enclosure stable through freeze-and-thaw cycles and resists the ground movement that lifts lesser boxes over time. Despite the compact footprint, the interior gives crews real workspace for slack storage and larger splice cases, so a pedestrian pull point can still carry the FTTH connections a build adds later. The unit accepts an optional locating puck for buried identification, a custom logo plate and a choice of colors for standardization across a program. Engineered to meet ANSI/SCTE 77 Tier 3 and BABA and BEAD compliant, it suits federally funded last-mile and access builds where a pedestrian load class is the correct specification.
Dimension
x
x
inches
Weight
Lid:
lb
Base:
lb
Material
e.g. HDPE
Benefits
- Telecom network operators
- Fiber contractors
- Municipal broadband projects
Applications
- Fiber FTTH
- Fiber Backbone
- Telecom Access
Environments
- Roadways
- Shoulders and verges
- Utility corridors
Specifications
Technical specifications and dimensions
Every detail engineered for field performance and cost efficiency. Tier 3 delivers the capacity and durability that networks demand.
Dimension
x
x
inches
Weight
Lid:
lb
Base:
lb
Material
e.g. HDPE
Options Available:
Comparison
Norvant Design Innovation vs Standard Handhole Features
See how Tier 3 stacks up on capacity, lead time, installation, and compliance.
Design Feature
Why This Matters
Norvant Solution
Standard Market Offerings
Lid Security in Flood Conditions
Heavy rain causes vaults to flood, pressure buildup lifts lids into traffic or they float away
Auto-Latch System – automatic locking prevents lid displacement under pressure
Manual friction-fit lids that can dislodge; requires separate locking mechanisms or weighted lids
Ground Movement Protection
Freeze-thaw cycles and soil heaving push vaults upward, breaking seals and damaging installations
Flared Anti-Heaving Base Design – wider footprint resists vertical displacement from frost and water action
Straight-wall designs rely on weight alone; vulnerable to seasonal ground movement
Structural Strength
Smooth walls requiring thicker material or composite reinforcement to achieve same load rating
Working Space for Splicing
High-density fiber deployments need room for splice cases, slack storage, and future cable additions
25% Larger Internal Capacity at same price tier – future-proofs against network growth
Standard internal dimensions force premature change-outs as take-rates increase
Asset Location & Management
Field crews waste time locating buried infrastructure; asset databases become outdated
Designed for Locating Puck Integration – optional sensor enables GPS mapping and digital asset management
No provisions for tracking technology; relies on paper maps or technician memory
Design Feature
Lid Security in Flood Conditions
Why This Matters
Heavy rain causes vaults to flood, pressure buildup lifts lids into traffic or they float away
Norvant Solution
Auto-Latch System – automatic locking prevents lid displacement under pressure
Standard Market Offerings
Manual friction-fit lids that can dislodge; requires separate locking mechanisms or weighted lids
Design Feature
Ground Movement Protection
Why This Matters
Freeze-thaw cycles and soil heaving push vaults upward, breaking seals and damaging installations
Norvant Solution
Flared Anti-Heaving Base Design – wider footprint resists vertical displacement from frost and water action
Standard Market Offerings
Straight-wall designs rely on weight alone; vulnerable to seasonal ground movement
Design Feature
Structural Strength
Why This Matters
HDPE is lightweight but must withstand Tier 22 load ratings (33,750 lbs) without flexing
Norvant Solution
Ribbed Sidewall Engineering – internal reinforcement maintains structural integrity at lower weight
Standard Market Offerings
Straight-wall designs rely on weight alone; vulnerable to seasonal ground movement
Design Feature
Working Space for Splicing
Why This Matters
High-density fiber deployments need room for splice cases, slack storage, and future cable additions
Norvant Solution
25% Larger Internal Capacity at same price tier – future-proofs against network growth
Standard Market Offerings
Standard internal dimensions force premature change-outs as take-rates increase
Design Feature
Asset Location & Management
Why This Matters
Field crews waste time locating buried infrastructure; asset databases become outdated
Norvant Solution
Designed for Locating Puck Integration – optional sensor enables GPS mapping and digital asset management
Standard Market Offerings
No provisions for tracking technology; relies on paper maps or technician memory
