Oak - Harvest Oak | BP421HOLG | Hardwood
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3 in. Engineered Hardwood Plank

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Oak - Harvest Oak Hardwood BP421HOLG
Oak - Harvest Oak Hardwood BP421HOLG
Oak - Harvest Oak Hardwood BP421HOLG

Oak - Harvest Oak

3 in. Engineered Hardwood Plank

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Flooring Type
Product Number
Performance Class
Flooring Costs
Residential Warranty : 25 years  Refers to the number of years the product is warranted by Armstrong
Commercial Warranty : 3 years  Refers to the number of years the product is warranted by Armstrong
Engineered Construction relates specifically to either solid or engineered hardwood. Solid hardwood flooring is of one piece of wood while engineered hardwood flooring is made up of 3 to 10 thin layers of hardwood that are bonded together.
Finish System
Dura-Luster Plus Urethane The protective surface coating found on all flooring.
Harvest Oak
Gloss Level
Medium Gloss Gloss describes the shiny coating that adds a polished look to the floor’s surface. Every flooring category (hardwood, vinyl, laminate) offers gloss levels (high, medium, low) from which to choose based on your room design and lifestyle.
Design / Texture
Traditional Finish Design / Texture refers to a flooring surface appearance.
Edge Type
Micro Edge / Micro Ends Describes the way the hardwood and laminate board edges and ends are cut. The most common edges are described as:<br/><b style="display:block;text-align:left;padding-left:7px">Beveled-Edge</b><img src="/flooring/i/images/Beveled.gif"/><b style="display:block;text-align:left;padding-left:7px">Eased-Edge</b><img src="/flooring/i/images/EasedBevel.gif"/><b style="display:block;text-align:left;padding-left:7px">Micro-Edge</b><img src="/flooring/i/images/MicroBevel.gif"/><b style="display:block;text-align:left;padding-left:7px">Square-Edge</b><img src="/flooring/i/images/SquareBevel.gif"/>
3 in. Width refers to how wide (in inches) each hardwood plank will be. Armstrong offers many widths, but <a href="/flooring/products/hardwood/wide-plank-5-in-and-up/_/N-67oZ6xc">wide plank hardwood flooring</a> is currently popular.
Varying Lengths: 10 - 48 in.
3/8 in.
Sq. Foot per Carton
DIY Level
Installation Location
Below/On/Above Ground Level
Installation Method
Glue or Staple or Floating
Product Classification
Board-to-Board Color Variation
Board-to-Board Color Variation

Wood is a natural material that features changes in color and tone. The board-to-board color variation is more pronounced in some species, less in others. If you like the look of contrasting light and dark tones, select a species that offers most color variation. If you prefer consistent color from board to board, choose the least color variation.

Hardness Scale
Hardness Scale

The density/hardness of the wood species and its ability to withstand foot traffic, children and pets will impact its wear performance, and will vary from species to species. Strong, resilient Oak is used as the industry benchmark. The hardness scale shown to the left shows the relative hardness of this wood species.


Download Installation Guide
Download the complete Armstrong product installation guide.
3/8" & 1/2" Eng. Hardwood Installation Instructions
Professional Installation
No matter what flooring type you choose, we recommend you consult your retailer to locate an Armstrong Certified Installer near you. Armstrong Certified Installers undergo rigorous flooring installation training on all Hardwood flooring products. You can rest assured that when you use an Armstrong Certified installer, your wood flooring will be installed properly and provide many years of satisfaction.

Find an Armstrong Certified Installer
DIY Installation
Visit the DIY Hardwood Flooring Installation section of the site to explore installation information and options for this and other Armstrong products

How to Install Hardwood Floors

Trim and Moldings

Trim and Moldings Overview

Complete your floor with coordinated transitions such as threshold, stair nose, reducer strip, quarter round and t-molding. We offer a complete selection of species and colors providing the finishing touch to your flooring installation

Trim and Moldings for Hardwood - Oak - Harvest Oak
Combination Base & Shoe

A molding used when a base is desired. Used to cover expansion space between the floor and the wall. Pre-drill and nail into the wall, not the floor.

Quarter Round
Quarter Round

A molding used to cover expansion space next to baseboards, case goods, and stairs steps. Pre-drill and nail to the vertical surface, not to the floor.

Reducer Strip
Reducer Strip

A teardrop shaped molding used around fireplaces, doorways, as a room divider, or as a transition between wood flooring and adjacent floor coverings that are less thick. Fasten down with adhesive, small nails or double-faced tape.

Stair Nose
Stair Nose

A molding undercut for use as a stair landings trim, elevated floor perimeters, and stair steps. Fasten down firmly with adhesive and nails or screws. Pre-drill nail holes to prevent splitting.


A molding used as a transition piece from one flooring to another of equal height or to gain expansion spaces. Fasten at the heel in the center of the molding. Additional support may need to be added to the heel of the molding dependent upon the thickness of the goods covered.


A molding undercut used against sliding door tracks, fireplaces, carpet, ceramic tile, or existing thresholds to allow for expansion space and to provide a smooth transition in height difference. Fasten to subfloor with adhesive and/or nails through the heel. Pre-drill nail holes to prevent splitting.

Customer Reviews

Questions & Answers

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