NGP L-700-RX Self-Attaching Do...
IN STOCK (leaves warehouse same day if ordered before 3pm ET)
$248.00
$183.62
NGP L-700-RX Self-Attaching Door Louver with Inverted V Design for 1-3/4" Doors

NGP L-700-RX Self-Attaching Door Louver with Inverted V Design for 1-3/4" Doors

(No reviews yet) Write a Review

Model: L700RX18X24

In Stock (leaves warehouse same day if ordered before 3pm ET)

$248.00
$183.62
Adding to cart… The item has been added
Free Shipping on orders over $199
We price match and offer bulk discounts! Click Add to Quote. It's quick and easy.
✨
Earn points with this purchase! You can redeem points for giftcards, iPads, XBox's and more. View Rewards
Free Keying on all locks
You may also like

NGP Self-Attaching Door Louver with Inverted V Design for 1-3/4" Doors

Professional Ventilation Solution for Commercial Door Applications

The NGP Self-Attaching Door Louver provides efficient ventilation for 1-3/4" thick doors with professional-grade construction. Featuring 18 gauge cold rolled steel construction with mitered and welded corners, this no-vision louver delivers 55% free area for optimal airflow. The inverted V design with 24 gauge steel blades and hemmed edges ensures durability in commercial applications while maintaining a clean, professional appearance.

Professional Features & Benefits

  • Door Compatibility: Designed specifically for 1-3/4" thick doors manufactured within door industry tolerance of +/- 1/16" for precise fit.
  • Heavy-Duty Construction: 18 gauge cold rolled steel frame with mitered and welded corners plus welded reinforcing clips for exceptional durability.
  • Optimal Airflow Design: Inverted V blade configuration provides 55% free area for maximum ventilation efficiency.
  • Professional Installation: Counter-sunk mounting screw holes with included #8 x 3/4" Phillips head SMS screws for clean, secure mounting.
  • Durable Blade Construction: 24 gauge steel blades with hemmed edges resist damage and maintain structural integrity.
  • Finish Protection: Gray primer (GPZ) powder coat finish provides corrosion resistance and professional appearance.
  • Flexible Sizing Options: Available in uneven and fractional sizes to accommodate various door configurations.
  • Optional Enhancements: Powder coat color options, aluminum insect screen (22 gauge 1/8" square mesh), Torx security screws, and galvanneal A40 steel available.

Technical Specifications

  • Commercial/Residential: Commercial
  • Department: Door Hardware
  • Product Category: Door Trim and Accessories
  • Product Group: Door Trim and Accessories
  • Product Subgroup: Lite Kits and Louvers
  • Product Type: Lite Kits & Louvers
  • Subcategory: Lite Kits & Louvers

Professional Applications

  • Commercial Office Buildings
  • Educational Facilities
  • Healthcare Institutions
  • Retail Establishments
  • Industrial and Warehouse Facilities
  • Multi-Tenant Residential Properties
  • Government and Municipal Buildings

Why Choose NGP Quality?

NGP door louvers deliver professional-grade reliability with 18 gauge cold rolled steel construction and welded reinforcing clips for demanding commercial applications. The precision manufacturing ensures compatibility with standard 1-3/4" doors within industry tolerances, while the gray primer powder coat finish provides long-lasting protection. Engineered for commercial environments where dependable ventilation and professional appearance are essential.

Manufacturer Resources

NGP Lite Kits and Louvers

Product Specs

Product Group:
Door Trim and Accessories
Product Subgroup:
Lite Kits & Louvers
Product Type:
Louvers
Subcategory:
Lite Kits & Louvers
Commercial/Residential:
Commercial
Product Category:
Door Trim and Accessories
Department:
Door Hardware

NGP L700RX18X24 – Frequently Asked Questions

1) Will the NGP L-700-RX louver fit a 1-3/4 inch door?
That is the door thickness the L-700-RX is built for. It is a self-attaching louver sized for 1-3/4 inch doors manufactured within the door industry tolerance of +/- 1/16 inch. Thicker or thinner leaves are a different part, so on a 1-3/8 inch interior door or a thick lead-lined leaf this one won't clamp correctly.
2) What size door cutout do I need for an NGP L-700-RX door louver?
You order the L-700-RX by cut out size, width x height, and it comes in eight: 18 x 16, 18 x 24, 22 x 72, 24 x 12, 24 x 24, 28-5/8 x 6, 28-5/8 x 32, and 35-7/8 x 5-7/8 inches. Measure the opening you are cutting (or the existing hole you are filling) and match it to one of those. Uneven and fractional sizes are part of the range, which is why the 28-5/8 and 35-7/8 widths exist for specific door and stile layouts.
3) Can you see through an NGP L-700-RX louver, or does it block sight lines?
No vision through it. The inverted V blade design blocks the sight line while still passing air, so it suits a mechanical room, storage room, restroom or office door where you want airflow without anyone looking in. If you need daylight or visibility, a louver is the wrong part and you want a lite kit and glass instead.
4) How much air will an NGP L-700-RX door louver actually pass?
55 percent free area, which is the share of the cut out that is open for airflow. Multiply that by the cut out you pick: a 24 x 24 inch cut out is 576 square inches, so about 317 square inches of free area. That is the number a mechanical contractor uses to check the transfer air requirement for the room.
5) Do I need separate mounting hardware to install an NGP self-attaching door louver?
The screws come with it. The L-700-RX ships with #8 x 3/4 inch Phillips head sheet metal screws and the frame has counter-sunk screw holes, so the heads sit flush. Self-attaching means the two frame halves pull together through the door cutout from both faces, no separate clamp assembly to buy. Cut the opening, set the halves, drive the screws.
6) Is the NGP L-700-RX louver strong enough for a school or warehouse corridor door?
It is built for commercial traffic. The frame is 18 gauge cold rolled steel with mitered and welded corners plus welded reinforcing clips, and the blades are 24 gauge steel with hemmed edges, so the leading edge of each blade will not open up from a cart hit or a mop handle. NGP lists it for office buildings, schools, healthcare, retail, industrial and warehouse, multi-tenant residential and municipal work.
7) What finish does the NGP L-700-RX ship in, and can I get it to match my other doors?
Standard is gray primer, the GPZ powder coat, which gives corrosion protection and takes field paint if you want it to match the door color. Powder coat colors are an available option if you would rather have it finished from the factory than painted on site, which is the usual call when you are matching a fleet of existing openings.
8) Can I add an insect screen to an NGP door louver?
Yes, an aluminum insect screen is an option on the L-700-RX, 22 gauge with 1/8 inch square mesh. Worth specifying on exterior-adjacent openings, loading dock vestibules, or anywhere the louver connects to a space you do not want bugs migrating into. It has to be specified when you order, so decide before the order goes in rather than trying to add mesh later.
9) Are tamper resistant screws available for a door louver in a psych ward or detention area?
Torx security screws are an option in place of the standard Phillips SMS on the L-700-RX. Specify them where the louver is on a door residents or the public can reach, so the frame cannot be taken off with a screwdriver from the corridor side. Galvanneal A40 steel is also available if the opening sees moisture or wash down.
10) What has to be specified when ordering an NGP L-700-RX louver?
Four things. Cut out size, width first then height, from the eight offered up to 22 x 72 inches. Finish, gray primer as standard or a powder coat color. Whether you want the aluminum insect screen. And whether you want Torx security screws instead of the standard Phillips, plus galvanneal A40 steel if the environment calls for it. Door thickness is not a choice here, it is a 1-3/4 inch door part.
11) I need a tall louver for a full height transfer air opening. What size does NGP go up to?
The tallest cut out in the L-700-RX range is 22 inches wide by 72 inches tall, which is the one to use for a full height transfer air opening in a mechanical or electrical room door. Below that, 28-5/8 x 32 inches is the largest wide format. For short strips at the bottom of a door, 28-5/8 x 6 and 35-7/8 x 5-7/8 inches cover the undercut replacement application.
12) Will an NGP self-attaching louver work on a wood door as well as a hollow metal door?
Self-attaching is the point of the L-700-RX design. The two frame halves fasten to each other through the cut out with the included #8 x 3/4 inch screws rather than being welded or factory installed into the door, so it goes into a field-cut opening in either a hollow metal or a wood leaf as long as the leaf is 1-3/4 inches thick within +/- 1/16 inch. What decides it is the thickness and the cut out, not the door material.
How fast can I get the NGP L700RX18X24 delivered?
Most orders ship the same day from our distribution partners, with quick delivery throughout the continental U.S. Need it urgently? Contact Us for expedited shipping options.
Can I return it if it doesn’t work for me?
Yes—ZenSupply offers a hassle-free return policy. If the product isn’t the right fit, reach out to our support team for a return authorization or setup a return by following our return instructions.
Does the NGP L700RX18X24 come with a warranty?
Absolutely. The NGP L700RX18X24 is backed by a manufacturer’s warranty. For full warranty terms, check the product documentation or Contact Us.
How do I get technical support or installation help for the NGP L700RX18X24?
You can call, text, or email our expert support team for fast answers. We’re here to help with product selection, installation tips, and troubleshooting. Contact Us
Why buy the NGP L700RX18X24 from ZenSupply?
ZenSupply makes it easy to get the commercial door hardware you need—fast shipping, expert support, and rewards on every order. Our team is always ready to help you choose the right product for your project.
!