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Contaminant Comparison Chart

For a complete list of contaminants that PUR filters reduce, please view our Performance Data Sheets here.

 

 

 

PUR & PUR PLUS FAUCET FILTERS
RF3375/RF9999

View Filters

PUR PLUS PITCHER FILTERS
PPF951K

View Filter

PUR BASIC PITCHER FILTERS
PPF900Z

View Filter

 

Vs. Brita*
Lead ✓ ✓
Microplastics ✓ ✓
Mercury ✓ ✓ ✓
Chlorine Taste & Odor ✓ ✓ ✓
DEET ✓
TTHM ✓

PUR’s Filtration Systems Are Certified By NSF And WQA For Their Contamination Reduction. WQA certifications as of 5/27/21 for Faucet filter models RF-3375 and RF-9999.

¹ Certified to reduce 10X more chemical and physical substances than Brita’s® leading pitcher filter.
² Certified to reduce 3X more chemical and physical substances than Brita’s® leading pitcher filter.
³ Certified to reduce 2X more chemical and physical substances than Brita’s® leading pitcher filter.
*Versus best-selling Brita® pitcher filter OB03. Brita® is a trademark of Brita LP.
**Like other leading brands, PUR does not filter microbes. As of 3/1/23 Brita® and ZeroWater® were not certified to filter microbes. Brita® is a trademark of Brita LP. ZeroWater® is a trademark of Zero Technologies, LLC..

 

PUR & PUR PLUS FAUCET FILTERS

 

 

 

PUR & PUR PLUS FAUCET FILTERS
RF3375/RF9999

View Filters
 

Vs. Brita*
Lead ✓
Microplastics ✓
Mercury ✓
Chlorine Taste & Odor ✓
DEET ✓
TTHM ✓

PUR’s Filtration Systems Are Certified By NSF And WQA For Their Contamination Reduction. WQA certifications as of 5/27/21 for Faucet filter models RF-3375 and RF-9999.

¹ Certified to reduce 10X more chemical and physical substances than Brita’s® leading pitcher filter.
² Certified to reduce 3X more chemical and physical substances than Brita’s® leading pitcher filter.
³ Certified to reduce 2X more chemical and physical substances than Brita’s® leading pitcher filter.
*Versus best-selling Brita® pitcher filter OB03. Brita® is a trademark of Brita LP.
**Like other leading brands, PUR does not filter microbes. As of 3/1/23 Brita® and ZeroWater® were not certified to filter microbes. Brita® is a trademark of Brita LP. ZeroWater® is a trademark of Zero Technologies, LLC..

 

PUR PLUS PITCHER FILTERS

 

 

PUR PLUS PITCHER FILTERS
PPF951K

View Filter

 

Vs. Brita*
Lead ✓
Microplastics ✓
Mercury ✓
Chlorine Taste & Odor ✓
DEET
TTHM

PUR’s Filtration Systems Are Certified By NSF And WQA For Their Contamination Reduction. WQA certifications as of 5/27/21 for Faucet filter models RF-3375 and RF-9999.

¹ Certified to reduce 10X more chemical and physical substances than Brita’s® leading pitcher filter.
² Certified to reduce 3X more chemical and physical substances than Brita’s® leading pitcher filter.
³ Certified to reduce 2X more chemical and physical substances than Brita’s® leading pitcher filter.
*Versus best-selling Brita® pitcher filter OB03. Brita® is a trademark of Brita LP.
**Like other leading brands, PUR does not filter microbes. As of 3/1/23 Brita® and ZeroWater® were not certified to filter microbes. Brita® is a trademark of Brita LP. ZeroWater® is a trademark of Zero Technologies, LLC..

 

PUR BASIC PITCHER FILTERS

 

 

 

PUR BASIC PITCHER FILTERS
PPF900Z

View Filter

 

Vs. Brita*
Lead
Microplastics
Mercury ✓
Chlorine Taste & Odor ✓
DEET
TTHM

PUR’s Filtration Systems Are Certified By NSF And WQA For Their Contamination Reduction. WQA certifications as of 5/27/21 for Faucet filter models RF-3375 and RF-9999.

¹ Certified to reduce 10X more chemical and physical substances than Brita’s® leading pitcher filter.
² Certified to reduce 3X more chemical and physical substances than Brita’s® leading pitcher filter.
³ Certified to reduce 2X more chemical and physical substances than Brita’s® leading pitcher filter.
*Versus best-selling Brita® pitcher filter OB03. Brita® is a trademark of Brita LP.
**Like other leading brands, PUR does not filter microbes. As of 3/1/23 Brita® and ZeroWater® were not certified to filter microbes. Brita® is a trademark of Brita LP. ZeroWater® is a trademark of Zero Technologies, LLC..

 

How to Choose CDX Plywood for Structural Use in 2026?

How to Choose CDX Plywood for Structural Use in 2026? Choosing a panel starts with the job, not the price tag. A roof deck, wall sheathing, and subfloor face different loads, moisture conditions, and support spacing. “CDX” usually describes face veneer grades and an Exposure 1 bond classification. It does not confirm suitability for every structural application. Check the panel stamp for its structural rating, thickness, span rating, and applicable standard. Small print matters. A panel exposed to rain during storage can also be damaged, even when its adhesive is rated for temporary moisture exposure.

This guide explains how to choose Cdx Plywood Structural panels based on project conditions in 2026. It considers framing spacing, expected loads, edge support, fastener details, and protection from weather. A 15/32-inch sheet may suit one assembly but fall short in another. That detail is easy to miss. Compare the panel stamp with manufacturer specifications and the project’s design requirements; labels alone cannot answer every question. Requirements can vary by application and location, so confirm relevant building rules with a qualified professional when needed. There is no single best CDX panel for every job. Even careful planning leaves room for a second look, especially when drawings, site conditions, or product information do not match. The sections ahead offer a practical way to evaluate those details before selecting a panel.

How to Choose CDX Plywood for Structural Use in 2026?
Table of Contents [Hide]
1 Define the Structural Loads and Intended Application
2 Confirm CDX Grade, Panel Rating, and Applicable Standards
3 Match Panel Thickness and Span Rating to Support Spacing
4 Evaluate Moisture Exposure and Required Protective Measures
5 Verify Code Compliance, Product Documentation, and Supplier Quality

Define the Structural Loads and Intended Application

Before choosing CDX plywood, define the loads it must carry. Roof sheathing may face snow, wind uplift, and workers’ weight during installation. Floor panels must support people, furniture, and concentrated loads such as a loaded cabinet. Wall sheathing also helps resist lateral forces, depending on the building design. Loads tell the story. Identify the support spacing, too: a panel spanning 24 inches between framing members performs differently from one spanning 16 inches.

Then match the panel to its intended application. Check the panel stamp for thickness, grade, and span rating; “CDX” alone does not confirm that a sheet suits every structural use. Follow the rating for the actual roof, wall, or floor installation, along with the specified fastener type and spacing. Small details matter. A floor that feels springy may point to an unsuitable span or thickness, even when the panel looks sound.

Also consider moisture exposure. CDX panels are commonly made with Exposure 1 bonding, which tolerates temporary construction moisture, not prolonged weather exposure. Protect stored sheets from standing water, and allow wet framing to dry before covering it. Requirements vary by location and design. Check applicable building codes and, for unusual spans or heavy loads, consult a qualified structural professional. I might be tempted to choose a thicker sheet “just in case,” but that does not replace checking the load and support conditions.

Confirm CDX Grade, Panel Rating, and Applicable Standards

When choosing CDX plywood for structural use, do not rely on the letters alone. CDX generally describes face and back veneer grades and an Exposure 1 bond classification; it does not, by itself, confirm a panel’s allowable span or structural capacity. Check the grade stamp on each sheet. Look for the panel thickness, span rating, and applicable product standard, such as PS 1 or PS 2 where required by local codes. Stamps can be easy to miss beneath dust or rough handling.

Match the span rating to the framing spacing and intended use. A panel marked 32/16, for example, is rated for specific roof and subfloor spans under stated installation conditions; it is not a universal load guarantee. Check the project drawings and local building requirements, and confirm that the panel’s grade and rating match them. Keep panels dry during storage, support them evenly, and follow the specified fastening schedule. Small details matter.

A quick visual check helps, but it cannot replace the stamp or design guidance. I have seen buyers focus on thickness and overlook the span rating; it is an easy mistake. If the stamp is unreadable, ask the supplier for documentation before installation. Exposure 1 panels tolerate temporary construction moisture, not prolonged weather exposure. That distinction deserves a second look.

How to Choose CDX Plywood for Structural Use in 2026? — Confirm CDX Grade, Panel Rating, and Applicable Standards
Selection Check What to Confirm How to Use the Information Example or Caution
Meaning of “CDX” Check the panel grade and bond classification shown on the panel grade stamp or product documentation. “C-D” describes veneer-face grades; “X” is commonly used in trade descriptions for Exposure 1 adhesive bonding. Treat the stamp and applicable product standard—not the shorthand alone—as the authority. CDX is not, by itself, a complete structural specification or a guarantee that a panel is suitable for every structural application.
Structural standard Look for certification to the applicable U.S. Department of Commerce standard: PS 1 for Structural Plywood or PS 2 for Performance Standard for Wood Structural Panels. Match the panel’s certification and intended use to the project plans, local building code, and approval requirements. Do not assume every panel sold as CDX has the same standard, construction, or approved use.
Panel rating and span Confirm the span rating printed on the panel, such as 24/16 or 32/16, and verify the panel’s installation instructions. For a typical span-rated panel, the first number indicates the maximum roof-support spacing and the second indicates the maximum floor-support spacing, in inches on center, subject to the applicable installation conditions. A 24/16 rating is not a universal design capacity. Check support layout, loads, edge support, fastening, and code requirements.
Thickness and support spacing Verify the specified nominal thickness, span rating, support spacing, and any edge-support requirements. Select thickness and panel rating from the project design or applicable code tables; install with the required face orientation, joints, and fastening schedule. Do not choose thickness based only on appearance or assume thicker panels automatically meet a particular design requirement.
Exposure classification Distinguish Exposure 1 from Exterior bond classification on the grade stamp or product documentation. Exposure 1 is intended to withstand temporary construction exposure, such as delays before enclosure. Exterior classification is intended for repeated wetting and drying or long-term weather exposure when used as specified. Exposure 1 does not mean the panel is designed for permanent outdoor exposure. Protect installed panels from prolonged moisture and follow project requirements.
Structural grade and special use Check for any specified grade category, such as Structural I, and confirm that the required designation appears on the panel documentation. Use a special structural designation only when it is required by the design or code and the panel is certified for that use. Structural I is a separate performance designation; it should not be inferred from the term CDX.
Intended application Identify whether the panel is for roof sheathing, wall sheathing, subflooring, or another structural use. Confirm that the panel rating, thickness, edge support, fastening, and exposure classification meet the requirements for that specific assembly. A panel suitable for one assembly or span may not be suitable for another without a design check.
Applicable code and installation Check the locally adopted building code, approved plans, manufacturer installation instructions, and any project-specific specifications. Use the code edition and product approvals adopted for the project location. Follow required fastener type, size, spacing, blocking, and panel-gap details. Requirements can vary by jurisdiction, building type, loading, and assembly. Confirm current local requirements before purchase and installation.
Pre-installation condition Inspect panels for damage, delamination, excessive warping, wetness, or illegible grade marks. Store panels flat and protected, and install them in accordance with the project details and panel instructions. Set aside visibly damaged panels and seek clarification if the grade stamp or required rating cannot be verified.

Match Panel Thickness and Span Rating to Support Spacing

How to Choose CDX Plywood for Structural Use in 2026?

Match Panel Thickness and Span Rating to Support Spacing

CDX describes a panel’s veneer grade and bond classification, but it does not, by itself, confirm a safe structural span. Check the grade stamp for a span rating, panel thickness, and intended use. A 32/16 rating generally refers to maximum support spacing of 32 inches for roof sheathing and 16 inches for subflooring, subject to specified conditions. Do not treat that rating as approval for every load or installation.

Measure the framing before selecting panels. If supports are 16 inches apart, choose a panel rated for that spacing and use the thickness required by your plans and local building code. Wider spacing can require thicker panels or a different rated product. Install the panel’s strength axis across the supports, and follow the specified edge-support and fastening details. On site, a tape measure and a clear view of the panel stamp can prevent costly guesswork. Details matter.

Evaluate Moisture Exposure and Required Protective Measures

How to Choose CDX Plywood for Structural Use in 2026?
Evaluate Moisture Exposure and Required Protective Measures

CDX plywood can handle temporary construction moisture, but it is not automatically weatherproof. Check the panel stamp for its bond classification and structural span rating. Exposure 1 panels are intended for limited wetting during construction, not ongoing exposure. For repeated rain or exterior service, choose panels rated for Exterior use and detail the assembly to shed water. USDA Forest Products Laboratory’s 2021 Wood Handbook notes that wood-decay fungi generally need moisture content above about 20 percent. That threshold is a warning, not a guarantee of safety.

Look closely at the site: a damp crawlspace, an unflashed window, or plywood sitting in a puddle can keep edges wet. Store sheets flat, raised off soil, and covered with a ventilated tarp. Install a water-resistive barrier, flashing, and cladding; seal exposed cut edges with a compatible coating. Allow wet framing to dry before closing the wall. A tarp can help, but it can also trap condensation. I would check the edges again after a storm.

Tips: Keep panels dry before installation. Leave drainage paths open. If the sheet swells, delaminates, or stays damp, investigate the leak before covering it. (USDA Forest Products Laboratory, Wood Handbook: Wood as an Engineering Material, 2021.)

How to Choose CDX Plywood for Structural Use in 2026: Evaluate Moisture Exposure and Required Protective Measures

How to read this chart: The 1–5 ratings are a qualitative screening scale, not test results or a code-approved performance rating. CDX panels marked Exposure 1 are intended to tolerate limited construction exposure; they are not waterproof and should not be treated as suitable for prolonged weather exposure or ground contact. Verify the panel grade stamp and local code requirements, keep panels dry and elevated, and use suitable water-resistive protection, flashing, and drainage as required by the assembly.

Verify Code Compliance, Product Documentation, and Supplier Quality

For structural use, a CDX stamp is only a starting point. The “C” and “D” describe face veneer grades; “X” generally indicates an exterior glue bond. It does not, by itself, confirm a panel’s span capacity or suitability for every structural application. Check the grade stamp for a recognized structural rating, panel thickness, and span information. Then compare those details with the project plans and applicable building-code requirements. When uncertain, ask the local building official or a qualified design professional.

Request current product documentation before ordering. Useful records may include a product data sheet, evidence of third-party certification, and installation guidance for the intended exposure and use. Make sure the documents match the exact panel being supplied, not a similar product. Paperwork matters. I would not treat a sales description as proof of compliance; that assumption is easy to make and hard to verify later.

Supplier quality shows up in the delivered stack. Check that stamps are legible and consistent, panels are the stated thickness, and edges show no obvious delamination or crushing. Store sheets flat, dry, and raised from soil, even when the adhesive is rated for exterior exposure. Look closely. A few damaged corners may seem minor, but they can complicate cutting and installation. Record discrepancies before the panels are installed, and request clarification rather than guessing.

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