Search  for anything...
PacTool

PacTool Gecko Gauge Siding Tool - LP Wood Installation, 2-Pack Green | 8" x 3/8" plastic gauges for LP siding & vinyl mounting blocks. Includes 2 clips. Compatible with engineered wood systems.

  • Based on 3,395 reviews
Condition: New
Checking for the best price...
$69.98 Why this price?
Save $5.02 was $75.00

Buy Now, Pay Later

As low as $11.66 / mo
  • – 6-month term
  • – No impact on credit to apply
  • – Instant approval decision
  • – Secure and straightforward checkout

Ready to go? Add this product to your cart and select a plan during checkout.

Payment plans are offered through our trusted finance partners Klarna, Affirm, Afterpay, Zip, Apple Pay, and Google Pay. No-credit-needed leasing options through Acima may also be available at checkout.

Learn more about financing & leasing here.

Selected Option

Free shipping on this product

FREE 30-day refund/replacement

To qualify for a full refund, items must be returned in their original, unused condition. If an item is returned in a used, damaged, or materially different state, you may be granted a partial refund.

To initiate a return, please visit our Returns Center.

View our full returns policy here.

Availability: In Stock.
Fulfilled by Amazon
Arrives Thursday, Sep 3
Order within 18 hours and 39 minutes
Available payment plans shown during checkout
Protection Plan Protect Your Purchase
Checking for protection plans...

Recently Viewed

Style: STANDARD


Size: 3/8” Thickness for LP Siding


Features

  • PRO GRIP CLAMP: Ideal for one-person installation this siding mounting block gauges and support the next course for nailing, with virtually no layout time. Making any job ideal for one-person installation, with more accuracy, and 50% percent faster.
  • SIDING TOOLS: Get your shingle project going with our smart tools. Designed to hold the board at the correct height, these hands-free clips assist with installing 3/8-inch thick Smartside LP siding products with less fatigue and more productivity.
  • LIFTING TOOL: Our gauges can be adjusted at 1/4-inch increments for 4 to 8-inch siding reveals. The patented Friction-Cam mechanism has the superior holding power to fully support 16-foot LP siding lengths, ensuring equal spacing between each board.
  • PROFESSIONAL EQUIPMENT: This gauge block set is safe to use on primed or pre-finished products. Made from durable plastic, the locking grip is made from a rubber material, ensuring that the front face of your siding will not be scratched or damaged.

Description

Our PacTool SA90338 Gecko Gauge LP Siding Installation Tool is ideal for the one-person installation of 3/8-inch thick LP siding products that help to decrease labor time. Make your next commercial home siding project easier and more productive with our efficient shingle gauge that supports and guides LP siding products by acting as a second pair of hands. This allows your siding to be level and adequately spaced while working your way up the wall, essentially eliminating the need for any layout. It is adjustable at 1/4-inch increments for 4-8-inch siding reveals. Our Gecko Gauge clamps have a patented non-marring friction cam mechanism that has the power to hold 16’ LP siding lengths for secure hands-free nailing. Our gauge is constructed from heavy- duty plastic and includes a rubber padding material on the locking grip, ensuring that it won’t scratch or mar pre-painted siding. At PacTool, we are known for our outstanding line of exterior products in the construction, renovation, and remodeling sector and take pride in providing exceptional solutions that help to reduce fatigue and frustration for craftspeople, artisans, and DIYers.

Material: Plastic


Brand: PacTool


Item dimensions L x W x H: 11 x 7 x 3 inches


Color: No Color


Shape: Rectangular


Item Dimensions: 11 x 7 x 3 inches


Item Thickness: 0.38 inches


Item Weight: 16 ounces


Color: No Color


Item Shape: Rectangular


Item Form: Sheet


Material: Plastic


Grade Rating: Residential


Brand Name: PacTool


UPC: 696738436992 645646903386 735090028473 757073446364 723434274549


Number of Items: 1


Unit Count: 1 Count


Global Trade Identification Number: 86


Included Components: PacTool International SA90338 Gecko Gauge


Item Type Name: Gecko Gauge


Manufacturer: General Tools


Model Number: SA90338


Part Number: SA90338


Warranty Description: Warranty


Frequently asked questions

If you place your order now, the estimated arrival date for this product is: Thursday, Sep 3

Yes, absolutely! You may return this product for a full refund within 30 days of receiving it.

To initiate a return, please visit our Returns Center.

View our full returns policy here.

  • Klarna Financing
  • Affirm Pay in 4
  • Affirm Financing
  • Afterpay Financing
  • Zip Pay in 4
  • Financing through Apple Pay
  • Financing through Google Pay
Leasing options through Acima may also be available during checkout.

Learn more about financing & leasing here.

Similar Products

Top Amazon Reviews

    • One of the best inventions for putting up Hardie board planks!
Style: STANDARD Size: 3/8” Thickness for LP Siding
We are currently putting Hardie board planks up and these make it so easy you can do it yourself! They slide in under the second board and space it where it you want it. It is adjustable to make the spacing different sizes as to if you want a straight line on either side of a door or window. They work great! Originally bought a set at Lowe's, but returned them as I needed to get a building permit to do this work so I had to wait. Then I found them on Amazon. Less expensive and shipped out immediately. If you are a homeowner as I am and doing this work yourself, don't forget to wrap your house with the correct tape and use the Gecko's. They make putting it up so easy! ... show more
Reviewed in the United States on May 10, 2024 by Mardie
    • Huge time saver for one-man application of clapboard siding
Style: STANDARD Size: 7/16” Thickness for LP Siding
Very valuable and a huge time saver. A must for one-man application. Holds any length in position while you make final adjustments and nail it fast. I pinned both ends and the middle of long boards, so that on the next course the Gecko gage would easily slide under that board. Then after pinning the next course I would go back and nail the previous course every 16 inches. Then repeat the process as I worked up. This way I never had any problem sliding the Gecko gage under the underling course of siding. Adjusts in 1/4 inch increments down to 4 inches to the weather but by inserting a spacer in the slot holding the siding you can go to spacing below 4 inches which was necessary for me in some places to match existing siding on an old house. Easily handles 18 footers. A great tool. I learned about these gages from a YouTube video. It would be good for the manufacturer to have a video on the web page where it is sold so first time users like me understood how to use it. ... show more
Reviewed in the United States on June 24, 2021 by Buyer 777
    • Works great
Style: STANDARD Size: 3/8” Thickness for LP Siding
Great for lp siding and other siding, get your bottom one started and straight. And use this and keep a check.
Reviewed in the United States on April 26, 2026 by James
    • Good product, a couple of things to know
Style: STANDARD Size: 3/8” Thickness for LP Siding
These are a great invention. They did an excellent job of providing a consistent reveal for my entire LP siding job. Two comments... 1) if you are using greater than 8 ft siding spans you need an extra set. The two guages struggle with the siding weight. It can be done, but not recommended. 2) when clamping these down they tend to bow out from the siding surface. Seems like a design flaw. It is still workable, but there were some complications that you need to deal with Overall they did speed up the job and allowed me to "single man" my entire project. A few more iterations of this product are still needed. However, I would recommend these to anyone. ... show more
Reviewed in the United States on August 24, 2025 by Jerod S.
    • Siding Installations Must Have
Style: STANDARD Size: 3/8” Thickness for LP Siding
These gauges are a must have for hanging siding. Nice to have the extra set of hands plus ensures each row is installed with proper spacing. Well worth the cost. Very easy to use.
Reviewed in the United States on June 18, 2026 by TimG
    • Great Tool
Style: STANDARD Size: "5/16” Thickness for Hardie Siding with P...
Great Tool Give you the ability to install 12' boards by yourself
Reviewed in the United States on February 13, 2026 by Amazon Customer
    • Big help for DIY...
Style: STANDARD Size: 3/8” Thickness for LP Siding
Made the job a lot easier.
Reviewed in the United States on July 14, 2026 by Amazon Customer
    • Must-Have
Style: STANDARD Size: 3/8” Thickness for LP Siding
Absolute must have product for lap siding installation. It enabled me to work solo, but I imagine it is also useful to increase efficiency when working as a team.
Reviewed in the United States on April 3, 2026 by Greg Morris

Can't find a product?

Find it on Amazon first, then paste the link below.
Checking for best price...