Subterra Series Max Tier 22 Handhole (24x36x24 ID)
e.g. RUS
Approved
Compliant
Made in USA
Description
The Subterra Max Tier 22 handhole in the 24x36x24 internal size is the core enclosure in Norvant’s flagship heavy-duty line, engineered for roadways, shoulders and other high-load environments. A tough HDPE base is paired with an Impact Modified Resin lid reinforced with ArmorGalv-coated steel cross tubes, giving the structural confidence of concrete at around 108 lb, so a small crew can place it without lifting gear. At 24 by 36 by 24 inches internally, this size handles the majority of everyday splice, slack and drop work while leaving headroom for growth. A straight-wall, anti-heaving ribbed base locks the unit into backfill, resisting heave and settling after install. The enclosure accepts cable management, an optional locating puck for buried identification, and a custom logo plate or color for standardization across a build. Engineered to exceed ANSI/SCTE 77 Tier 22, BABA and BEAD compliant and RUS pending, this size is ready for federally funded fiber and smart-infrastructure programs. It shares specs and options with the 32x44x24 and 32x44x45 variants, so crews can standardize hardware across an entire route.
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
