Levolor Cordless Mark I DustGuard 1" Blind
PART I Ė GENERAL
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:
- The installer shall be a firm approved by Levolor Home Fashions.
- The installer shall be qualified to install the product specified, as
demonstrated by prior experience.
B. Job mock-up: (Describe)
A. Product information: Submit Levolor product literature and installation
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
1.04 Delivery, Storage, and Handling
A. Packing and Shipping:
- Materials shall be delivered to the Project in Levolorís original unopened
packaging with labels intact.
- Materials shall be stored in a clean area, which is free of corrosive
fumes, dust, and away from construction activities.
- 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.
- Stacks shall be covered with tarpaulins or plastic such that ventilation
is provided for, and such that contaminants are prevented from contacting
1.05 Project/Site Conditions (Before Product Installation Begins)
A. Roof must be tight, windows and frames installed and glazed, and interior
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.
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.
PART II Ė PRODUCTS
2.01 Manufacturer and Product Description
A. Acceptable product: Levolor Cordless Mark I DustGuard 1" (25mm) blind
manufactured by Levolor Home Fashions.
- 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.
- 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.
- 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.
- 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.
- 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
- 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".
- 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.
- 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.
- 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".
- 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):
- 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%.
- 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%.
- 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.
- 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.
- 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.
- Options shall include:
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
- Size limitations:
Min. Width = 17"
Max. Width = 100"
Min. Length = 12"
Max. Length = 73"
PART III Ė EXECUTION
A. Window treatment subcontractor shall be responsible for inspection of
site, field measurements, and approval of mounting surfaces and installation
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
B. Provide support brackets per Levolorís installation instructions.
C. See installation instructions packaged with blinds for more installation
D. Provide adequate clearance to permit unencumbered operation of blind and
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
© Copyright 1999, Levolor Home Fashions. All rights reserved. US and non-US
patents and patents pending. Product specifications are subject to change