Levolor Cordless Mark I DustGuard 1" Blind



1.01 Scope

A. Furnish and install Levolor blinds provided by Levolor Home Fashions, 4110 Premier Drive, High Point, NC 27265, in accordance with specifications, drawings, and contract documents.

B. Related work specified elsewhere.

1.02 Quality Assurance

A. Installerís qualifications:

  1. The installer shall be a firm approved by Levolor Home Fashions.
  2. The installer shall be qualified to install the product specified, as demonstrated by prior experience.

B. Job mock-up: (Describe)

1.03 Submittals

A. Product information: Submit Levolor product literature and installation instructions.

B. Shop drawings: Indicate field-measured dimensions of opening which are to receive blinds, details on mounting surface and sill conditions, and details of corners and conditions between adjacent blinds.

C. Color samples: Submit a sample of each type and color of material specified.

1.04 Delivery, Storage, and Handling

A. Packing and Shipping:

  1. Materials shall be delivered to the Project in Levolorís original unopened packaging with labels intact.

B. Storage:

  1. Materials shall be stored in a clean area, which is free of corrosive fumes, dust, and away from construction activities.
  2. Materials shall be stacked horizontally using plastic or wood shims such that drainage and ventilation are provided for, and such that water cannot accumulate in, about or upon the containers.
  3. Stacks shall be covered with tarpaulins or plastic such that ventilation is provided for, and such that contaminants are prevented from contacting surfaces.

1.05 Project/Site Conditions (Before Product Installation Begins)

A. Roof must be tight, windows and frames installed and glazed, and interior doors hung.

B. Wet work including concrete, masonry, plaster, stucco, terrazzo, Sheetrock, spackling, and taping (including sanding) shall be complete and dry.

C. Ceilings, window pockets, electrical, and mechanical work above the product shall be complete.

D. Electrical power (110 volt AC) shall be available for installerís tools within 500 ft. of product installation areas.

1.06 Warranty

A. Lifetime warranty: Levolor Home Fashions shall repair or replace for the life of the blind, at its option, without charge, any part found defective in workmanship or material as long as the blind remains in the same window for which it was purchased.


2.01 Manufacturer and Product Description

A. Acceptable product: Levolor Cordless Mark I DustGuard 1" (25mm) blind manufactured by Levolor Home Fashions.

B. Materials:

  1. Headrail shall be of .025" thick Tomized steel, 1.475" high x 1.625" wide with a crowned underside profile to prevent light leakage. Headrail shall be a valance-free design and shall be coated with a baked-on finish. All headrail detailing shall be high-density polyethylene. All hardware shall be enclosed in the metal headrail.
  2. Guardian Tilter mechanism shall be of a not less than .042" thick Tomized steel housing with a self-lubricating nylon, automatically disengaging worm and gear mechanism to provide maximum closure, eliminate overdrive, and prevent strain or damage to blind.
  3. Tilt Wand shall be solid, clear, transparent polymer with round cross section of 5/16" diameter. The tilt wand mechanism shall exit the bottom of the headrail via a U-shaped black or bright metal-plated steel link. The tilt wand end contains a split eye machining detail, which facilitates attachment and removal of the wand from the headrail.
  4. Patent pending Spring Motor assembly provides counter balance with sufficient sensitivity to hold slats at desired height upon release of the bottomrail. Three sizes of Spring Motor assembly are available to cover the load requirements of different sized blinds. The Spring Motor assembly shall consist of a group of Nykon-R polymer gears and spools housed between a pair of 0.059" thick galvanized steel plates, driven by a variable force coil spring made of Bartex spring steel. The variable force coil spring counterbalances the weight of the bottomrail and slats and drives the spools that store the lift cord as the blind is raised.
  5. Drum and cradle shall be provided for each ladder.
    a. Drums shall be of .031" thick Tomized steel having two holes with rolled edges to anchor barbs of both ladder ends.
    b. Cradles shall be of .042" thick Tomized steel having two holes with rolled edges to guide cords through bottom of headrail without abrasion. They shall provide bearing support for the tilt rod, thus preventing the weight of the blind from being transferred to the tilter. Cradles shall center drums over ladder openings.
  6. Tilt rod shall be designed to achieve a torsional deflection limit of less than or equal to 6 degrees per 30" length with an applied torque of one foot-pound. A U-shaped tilt rod with a circular radius of approximately 0.125" is used for average blind sizes and lengths. For blinds over 60" wide and under 80" long, or over 55" wide and over 80" long, tilt rod shall be solid D-shaped with an average cross section of 0.28".
  7. Installation brackets shall be a combination of 0.048" and 0.036" thick tempered and electroplated steel designed to minimize light gaps. A spring mechanism provides pre-load engagement with the headrail. Brackets shall consist of two interconnecting pieces. One of the pieces is designed for ceiling mount applications and shall be completely concealed within the headrail. A second piece interconnects with the ceiling mount piece to convert the bracket for use in wall mount application. Both are supplied with each blind in the case of OB installations. Six polymeric shims are supplied with each blind to assist in installations involving uneven surfaces.
  8. Intermediate brackets shall be of the same design as installation brackets. They shall be installed with blinds over 60" wide and under 80" long, or over 55" wide and over 80" long. Intermediate brackets will be supplied as required.
  9. Ladders (slat supports) shall be braided polyester yarn-dyed to Levolor color standard. The two vertical components shall be .076" x .038" designed for maximum flexibility combined with minimum stretch and tensile strength of not less than 50 lbs. per cable. Horizontal components (rungs) shall consist of not less than two cables inter-braided with the vertical components. Ladder shall support the slats without visible distortion. Distance between slats shall not exceed 19.6mm (nominally 15.7 slats per vertical foot). Distance between ladders shall not exceed 23" for blinds up to 80" long. For blinds over 80" long, distance between ladders shall not be greater than 22". Distance between end ladder and end of slat shall not exceed 7".
  10. Slats shall be of 5000 series magnesium aluminum alloy only, which includes recycled aluminum materials. Aluminum alloy shall be tempered to optimize tensile and yield strength for superior slat strength, resiliency, and corrosion resistance. Slats shall be nominally 1" wide and .0075"+/- .0003 (prior to coating); after coating the thickness of the slats shall be nominally .0085". Slats shall have a coating thickness of .8 mil to 1.5 mil. Unperforated slats shall perform to 500 hours of 100% relative humidity testing, 300 hours of 5% salt spray solution at 95 degree F testing, and 250 hours of accelerated weathering testing without blistering, fading, corroding, or adhesive failure. Slat thickness and ladder support distances shall prevent visible sag or bow after continued use indoors.

    DustGuard feature is a permanent, patented paint process that disrupts the natural static attraction of airborne dust particles, reducing dust build up by 50-70 percent. (NOTE: Certain Mark I finishes may not be available with the DustGuard feature. Please confirm selection with DustGuard color list.

    Slats shall be (select one):
    1. Unperforated.
    2. Pinlight - Slats shall be perforated with a nominally spaced pattern of .039" diameter holes, nominally 13 per inch of slat length. Slats shall have an openness factor of 1.5%.
    3. SheerView - Slates shall be perforated with a staggered pattern of .020" diameter holes, nominally 177 per inch of slat length. Slats shall have an openness factor of 6%.
  11. Bottomrail shall be of 0.029" thick Tomized steel and shall be fully enclosed with color compatible flexible PVC bottom bumper and high-density polyethylene end caps designed to prevent bottomrail from marring windowsill and/or mullions. End caps shall provide hold-down capability designed to prevent bottom bar sway on doors or in windy exposures.
  12. Lift Cord shall be braided of high strength, 0.9 mm diameter polyester fiber, 34 picks per inch, 16 carrier smooth braids, and shall be flexible, have minimum stretch, maximum abrasion resistance characteristics, and a minimum breaking strength of 42 lbs. Cord shall be of sufficient length equalized to properly control raising and lowering of blind and spaced not over 46" between cords.
  13. Color of blind shall be selected from over 110 Mark I standard solid colors, Tiltone colors, specialties, or standard metallic slat finishes and complementary standard accessory finishes. DustGuard feature is not available on all colors.
  14. Options shall include:
    a. Cutouts
    b. Extension Plates
    c. End Mount Brackets
    d. Hold Down Brackets
    e. Multiple Blinds on One Headrail
    f. Multi-Colored Striping
    g. Restrictive Cam Tilter
    h. Telescopic or Non-Telescopic Tilter Pole
    i. Universal Ring Tilter
  15. Size limitations:
    Min. Width = 17"
    Max. Width = 100"
    Min. Length = 12"
    Max. Length = 73"



A. Window treatment subcontractor shall be responsible for inspection of site, field measurements, and approval of mounting surfaces and installation conditions.

B. Subcontractor shall verify that site is free of conditions that interfere with blind installation and operation, and shall begin installation only when any unsatisfactory conditions have been rectified.


A. Installation shall comply with Levolor specifications, standards, and procedures.

B. Provide support brackets per Levolorís installation instructions.

C. See installation instructions packaged with blinds for more installation details.

D. Provide adequate clearance to permit unencumbered operation of blind and hardware.

E. Demonstrate blinds to be in uniform and smooth working order.


A. Clean soiled blinds with a mild soap solution only. Do not use cleaning methods involving heat, bleach, abrasives, or solvents. Do not use window cleaner or cloths with paper content.

B. Ensure proper drying following cleaning by providing adequate ventilation.

4110 Premier Drive
High Point, NC 27265
Contract Customer Service
1-800-624-0029 FAX

© Copyright 1999, Levolor Home Fashions. All rights reserved. US and non-US patents and patents pending. Product specifications are subject to change without notice.