HIDE
HIDE 20" Manhole & Access Cover Kit
HIDE 20" Manhole & Access Cover Kit

HIDE 20" Manhole & Access Cover Kit

HIDE
SKU:
HAC20
$780.00

Preserve access to a large inspection or service opening without leaving a prominent utility lid using this flush 20-inch 316L stainless steel HIDE cover.

  • Conceals large service openings
  • Finished with the surrounding material
  • 316L marine-grade stainless steel
  • Removable access with the HIDE Safety Key
Choose your inlay depth Select the depth that matches your finished surface and installation requirements. Which inlay depth do I need?
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Confirm before ordering

Is this the right HIDE kit for your project?

Verify the application, opening and finished surface before selecting a depth.

What’s included

Representative HIDE cover kit with stainless-steel frame and tray, safety key, height adjuster, adhesive and documentation
Representative HIDE kit shown. Exact components vary by cover model and selected depth.
  • 316L stainless steel inlay lid
  • 316L stainless steel edge-protector frame
  • HIDE Safety Key access tool(s)
  • HIDE adhesive, 2 mm height adjuster and documentation

Surface inlay is not included. This large kit is offered in 0.8- and 1.2-inch depths and is not a concrete wet-pour kit.

Verify these product details

  1. 1
    ApplicationLarge exterior access, inspection and service openings; not designed as a drain or vehicle-rated manhole cover.
  2. 2
    Required openingClear frame access opening: approximately 18 inches square; verify required service clearance before ordering.
  3. 3
    Overall outside size20 inches square overall frame; inlay lid is approximately 19 3/4 inches square.
  4. 4
    Load and use ratingRecommended for pedestrian-only traffic areas; not rated for vehicle traffic. Confirm project-specific load and code requirements.

Confirm clear opening, full frame support, service clearance and finished inlay thickness before ordering. Professional installation and safe two-person handling may be appropriate.

Check the depth chart Ask SPI Supply
How HIDE works

A concealed cover in three steps

The stainless-steel system supports your selected surface material while preserving access to the point below.

Finished HIDE inlay cover being lifted with the removable safety key
The removable safety key provides access while allowing the installed cover to remain visually concealed when closed.
  1. 1

    Set the frame

    Install and level the edge-protector frame within the prepared surrounding surface.

  2. 2

    Fit the inlay

    Cut and secure matching tile, stone, paver, decking, turf, or another suitable finish inside the tray.

  3. 3

    Blend and access

    The finished lid sits flush with its surroundings and lifts with the supplied HIDE key when access is needed.

Depth selection chart

Match your finished surface to the correct depth

Measure the finished material, including adhesive or setting bed, then use the chart to select the appropriate inlay depth.

HIDE inlay depth recommendations by surface material and finished thickness
Surface material Material thickness Required depth
Tile / Turf 3/8″ to 1/2″ (1 cm) 0.4″ depth
Porcelain 5/8″ to 7/8″ (2 cm) 0.8″ depth
Travertine Paver 1″ to 1 1/4″ (3 cm) 1.2″ depth
Stone / Concrete 1 3/8″ to 1 5/8″ (4 cm) 1.6″ depth*
Brick / Stone / Concrete 1 3/4″ to 2″ (5 cm) 2.0″ depth*
Brick / Thicker Stone 2 1/4″ to 2 1/2″ (6 cm) 2.5″ depth*

* Deeper kits may include concrete-conversion components. Available depths and components vary by cover type and size; choose only from the options shown for this product.

Between sizes or planning a concrete installation? We can help verify the cover size, finished material thickness and complete kit before you order.
Ask SPI Supply
Project inspiration

Designed to disappear into the finished surface

Explore installed applications, finish ideas, technical drawings and kit details from this product’s gallery.

Finished HIDE cover aligned with surrounding stone paving
Finished installation
Before and after comparison replacing a visible drain grate with a stone-inlay HIDE cover
Stone-finish transformation
Before and after comparison replacing a green drain grate with a paver-inlay HIDE cover
Paver-finish transformation
Installation and support

Plan the installation before you order

Confirm the opening, finished material thickness and installation requirements with your contractor. Use the documents below for product-specific planning.

Manufacturer video

Watch the HIDE installation overview

Review the manufacturer’s installation process before selecting a kit or beginning site preparation. Always follow the instructions supplied for the exact product and depth selected.

Watch directly on Vimeo
PDFContractor installation adviceGeneral preparation and installation guidance for qualified contractors. PDFTechnical specificationsDimensions, opening requirements and technical product details. PDFWarranty and care guideSafe use, cleaning, maintenance and warranty information.
Frequently asked questions

Questions before installation

Still unsure? SPI Supply can help verify the kit before you order.

Ask a product question
How do I choose the correct inlay depth?

Measure the total finished thickness of the material that will sit inside the cover, including the adhesive or setting layer. Match that measurement to the depth chart above, then choose from the options available on this product.

Can a HIDE cover be installed in an existing deck?

Many HIDE covers can be used for retrofit projects. The opening dimensions, clearance, finished surface thickness and site conditions must be checked before ordering or altering the deck.

Should a professional install the cover?

Professional installation is strongly recommended. Have a licensed, suitably experienced contractor read and follow the applicable installation instructions before work begins; incorrect installation can affect warranty coverage.

What is included with a HIDE kit?

Kit contents vary by cover model and selected depth. Review the product-specific “What’s included” list above, the product description and the applicable technical documents before ordering.

How should the cover be cleaned and maintained?

Remove accumulated debris and clean the exposed surface appropriately for the surrounding finish. Do not allow acid or chemical-wash solutions to contact the stainless-steel components, and always store the safety key securely away from children.

Product details & specifications

HIDE HAC20 Manhole & Access Cover Kit – 20" Square, Inlay-Ready Cover

SKU: HAC20 (parent)  |  MPN: HAC20 (parent)  |  Brand: HIDE

Quick Facts: 20" × 20" cover | 316/316L marine-grade stainless steel | Inlay depths: ~0.8"-1.2" | Pedestrian traffic only | Opening underside ≈ 18" square
  • Radius large access points or service pits with a flush, inlayed finish for aesthetics and safety.
  • 316L stainless steel construction resists corrosion and outdoor wear.
  • Choose depth variant matching your inlay material (tile, stone, paver, etc.) to maintain a seamless look.
  • Includes all necessary hardware and HIDE inlay lid/tray for on-site inlaying.
  • Flush design minimizes trip hazards and hides access points in pedestrian-used zones.

Technical Specifications

Key Specs
Cover Size (Outside Frame) 20" × 20" square
Underside Opening ~18" square
Material 316L marine-grade stainless steel
Available Depth Variants 0.8" (5⁄8-7⁄8"), 1.2" (≈1-1¼")
Concrete Compatibility Not suitable for concrete inlay
Warranty 10 years (with proper maintenance)

Overview

The HIDE HAC20 Manhole & Access Cover Kit is a 20-inch square, inlay-ready large access cover designed for hiding manhole or inspection pit lids with your selected surface material. The kit includes an inlay tray and frame so tile, stone, or pavers can be set flush with the finished surface. Depth options allow material thickness flexibility. Made with high-quality stainless steel, it’s built for outdoor use in pedestrian traffic areas.

What’s Included

  • Inlay lid tray (stainless steel) sized for 20" cover
  • Frame / edge protector assembly
  • Hardware, height adjusters if needed
  • Instructions and warranty documentation

Installation Instructions

Technical Specifications

Warranty & Care Guide

Compatibility & Replacements

Designed for pedestrian access only. Suitable for surface inlays of thickness around 0.8" to 1.2". Replaces existing large access kits or manhole covers where you want a flush, decorative inlay finish without conventional heavy lids.

Installation & Notes

  • Ensure the surface material and inlay thickness match the chosen depth variant for a smooth finish.
  • This size variant is **not suitable for concrete inlay**—limit to tile, pavers, stone, etc.
  • Stainless steel must be protected from acid or chemical washing to avoid staining or damage.
  • Install with the access lid properly secured; keep the safety key tool handy.

Shipping & Returns

Ships from the USA. 30-day returns; customer is responsible for return shipping. Please refer to our Shipping & Returns policy for full details.

Additional Information

HIDE Summary:
Preserve access to a large inspection or service opening without leaving a prominent utility lid using this flush 20-inch 316L stainless steel HIDE cover.
HIDE Fact 1:
Conceals large service openings
HIDE Fact 2:
Finished with the surrounding material
HIDE Fact 3:
316L marine-grade stainless steel
HIDE Fact 4:
Removable access with the HIDE Safety Key
HIDE Application:
Large exterior access, inspection and service openings; not designed as a drain or vehicle-rated manhole cover.
HIDE Opening:
Clear frame access opening: approximately 18 inches square; verify required service clearance before ordering.
HIDE Outside Size:
20 inches square overall frame; inlay lid is approximately 19 3/4 inches square.
HIDE Load Rating:
Recommended for pedestrian-only traffic areas; not rated for vehicle traffic. Confirm project-specific load and code requirements.
HIDE Included 1:
316L stainless steel inlay lid
HIDE Included 2:
316L stainless steel edge-protector frame
HIDE Included 3:
HIDE Safety Key access tool(s)
HIDE Included 4:
HIDE adhesive, 2 mm height adjuster and documentation
HIDE Included Note:
Surface inlay is not included. This large kit is offered in 0.8- and 1.2-inch depths and is not a concrete wet-pour kit.
HIDE Product Note:
Confirm clear opening, full frame support, service clearance and finished inlay thickness before ordering. Professional installation and safe two-person handling may be appropriate.
HIDE Vimeo Video:
373802978
HIDE Contractor PDF:
https://spi.supply/content/hide/HIDE-Contractor-Installation-Advice.pdf
HIDE Technical PDF:
https://spi.supply/content/hide/HAC-TEC-2025-USA-v2.pdf
HIDE Warranty PDF:
https://spi.supply/content/hide/Homeowners-Manual-Warranty.pdf
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