Introducing the
Solatube® SkyVault™ Series M74 DS
.
SkyVault M74 DSSize Matters
• Largest tubular daylighting device yet
• Ideal for large volume spaces with high ceilings – Airports– Warehouses– Manufacturing facilities– Retail centers
• Maximum output with minimal impact on the building envelope
• Significantly reduced installation costs
SkyVault M74 DSYour “portal” to the sky
• M74 DS Daylighting System is the core of the new SkyVault Series
• 74 cm (29 in.) diameter• Nearly two times the aperture
and collection capability of our SolaMaster® Series
• More light, higher daytime illuminance
• Greater spacing between units with fewer roof penetrationsSolaMaster 750 DS-O SkyVault M74 DS-O
SkyVault M74 DSYear-round temperature control
• Maintain and control a comfortable interior temperature • Insulated, sealed curb cap flashings minimize heat gain/heat
loss through the roof• Dual dome option improves thermal efficiency even more• Reduces glare and minimizes traveling hot spots below• Visible light transmission second to none
SkyVault M74 DSLabor-saving installation
• Minimal labor and waste
• Pre-assembled roof and diffuser modules to speed installation
• Revolutionary Tab-Lock Connection System with Screwless Tube Belts eliminates unsightly, labor-intensive seam tape
• Minimal packaging, adhering to USGBC LEED construction waste management requirements
• Reduces installation time and excess packaging to save time and money
Big tubes for big spaces
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Solatube SkyVault M74 DSApplications
• High Bay (18’+ floor to ceiling heights)
• Types of Applications:– Industrial
• Warehouse, Manufacturing, Production
– Airports• Hangars, Concourse, Terminals
– Convention Centers, Exhibit Halls– Atriums, Lobbies– Sports Complexes, Arenas,
Gymnasiums– Medium & Big Box Retail
Solatube SkyVault M74 DS
Solatube SkyVault M74 DSComponentsOuter Dome
• High-impact polycarbonate filters out harmful UV rays
Optional Inner Dome• Optional Inner Dome can be added
as a pre-installed option• Improves thermal performance
Optional Security Guard• Optional Security Guard comes pre-
installed • Stainless steel wire grid inserts into
the flashing turret across the diameter of the opening
Curb Cap Flashing• Flashing features a curb cap that uses
R-6 rigid insulation• All joints come pre-sealed• Includes Dome Edge Protection Band
to achieve a rooftop fire rating
Tube Belt• Patented Tube Belt cinches the tube
connection • Prevents gaps and provides a
tapeless, self-sealing joint
Diffuser Assembly• Prismatic Diffuser comes pre-
assembled • Easily attaches to extension tubes
using the Tab-Lock Connection System and Tube Belts
• Circular shape is designed for open ceiling applications
Extension Tubes• Revolutionary Tab-Lock Connection
System with Tube Belts• Eliminates need for screws and tape• Comes in 24 in. and 48 in. lengths
Single Dome
Single Dome with Security Dual Dome with Security
Dual Dome
Solatube SkyVault M74 DSRoof Configurations
Solatube SkyVault M74 DSFeatures
Tube Belt Latch Riveted Seam Tube Tab Lock
Corner Bracket Dome Clamp Dome Edge Protection Band
Solatube SkyVault M74 DSInstallation
• Quick and easy top-down installation for short tube configurations
SkyVault M74 DS InstallationMock Installations
• Comparison Installations:– Solatube SolaMaster 330 DS-O, 750 DS-O and SkyVault M74 DS-O– Installed on mockup roof– Pre-installed curbs– Product unpacked and ready for install
Product Components Included in Mock Installations
Part # Solatube M74 DS Part # Solatube 330 DS Part # Solatube 750 DS
125000 M74 DS Dual Dome with Security Guard 512000 330 DS Dome and Tube Ring 512020 750 DS Dome and Tube Ring
300475 48" Extesnion Tube with Tab Lock 201130 Curb Mounted 510400 Inner Dome - Acrylic
420995 M74 DS Prismatic Diffuser Assembly 300490 48" Extension Tube 480000 Dome Security Guard
420200 Prismatic Diffuser 400675 Dome Edge Protection Band
201120 No Pitch 11" High
300490 48" Extension Tube
420200 Prismatic Diffuser
SkyVault M74 DS InstallationTiming Comparison
• M74 DS-O– 9 minutes, 40 seconds
• 9-12 minute installation with proper equipment & preparation
• Over 30% time savings!
• 330 DS-O– 14 minutes, 49 seconds
• 750 DS-O – 19 minutes, 49 seconds
SkyVault M74 DS InstallationTools Required
• Rivet Gun– Power/Air Rivet Gun is highly
recommended
• Rivet Attachment– Interesting Option is the RiveDrill– Blind Rivet drill attachment for power
drills, converts cordless drills into a pop-rivet gun• Model: RiveDrill RT120HP for 14V Drills• Website: www.RiveDrill.es • Cost: $271 at www.Grainger.com & $168
at www.S-BGroup.com • Video:
Solatube SkyVault M74 DSPerformance
Solatube M74 DS-O with L2 (K12) Diffuser Dual-Glazed DPP Single-Glazed DP
Sky ConditionSolar
Altitude (˚)Lumen Input*
DPP Lumen Output
DPP Efficiency
DP Lumen Output
DP Efficiency
Clear 10 5579 1793 32.1% 2551 45.7%Clear 20 13362 4213 31.5% 5144 38.5%Clear 30 21365 9163 42.9% 10492 49.1%Clear 40 28774 16520 57.4% 18422 64.0%Clear 50 35224 23623 67.1% 26260 74.6%Clear 60 40472 28887 71.4% 31890 78.8%Clear 70 44344 32404 73.1% 35783 80.7%Clear 80 46717 33358 71.4% 36798 78.8%Clear 90 47516 35330 74.4% 39041 82.2%
Cloudy 50 6700 3974 59.3% 4460 66.6%
Solatube SkyVault M74 DSPerformance
10 20 30 40 50 60 70 80 900
5000
10000
15000
20000
25000
30000
35000
40000
45000
50000M74 DS-O Clear Sky Lumen Summary
Input
DP Single-Glazed Output
DPP Dual-Glazed Output
Solar Altitude Angle (˚)
Lum
ens
10 20 30 40 50 60 70 80 900.0%
10.0%
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40.0%
50.0%
60.0%
70.0%
80.0%
90.0%M74 DS-O Clear Sky System Efficiency
DP Single-Glazed Dome
DPP Dual-Glazed Dome
Solar Altitude Angle (˚)
Efficie
ncy
Solatube SkyVault M74 DSPerformance Comparison
• M74 DS-O Clear Sky “Design Average” usable output of 1.3 to 1.5 times the usable output of a Solatube 330 DS-O
* Initial Pario Engineering estimates of lumen output for a CIE Clear Sky with a solar position of SALT = 40⁰ and a Solar Azimuth of 60°
Series Product Materials Performance @ 40° SALT (Lumens)*
330 DS-O Units Replaced
SolaMaster 330 DS-O L2 Acrylic outer Dome 9,404 N/A
SkyVault M74 DS-O DP-L2 PC outer dome 13,604 1.45
SkyVault M74 DS-O DPP-L2PC outer dome w/PETG inner
dome12,108 1.29
• CIE Overcast Sky, Middle America– Single Dome M74 DS-O-DP provides increased overcast sky winter
performance over the 330 DS-O
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utpu
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Solatube SkyVault M74 DSSeasonal Performance
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Out
put (
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ens)
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Spring/Fall
Out
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ens)
M74 DS-O-DP M74 DS-O-DPP 330 DS-O-DA-L2 750 DS-O-DAI-L2
Solatube SkyVault M74 DSU-Factor & SHGC Ratings
• NFRC Ratings for M74 DS-O-DPP-L2(National Fenestration Rating Council)
– U-Factor: 1.06 BTU/hr-ft2-ºF– SHGC: 0.30(Solar Heat Gain Coefficient)
Solatube SkyVault M74 DSWebpages
Solatube SkyVault M74 DSTechnical Resources
• www.solatube.com/support/technical-resources– Architectural Specifications– CAD Drawings– Cut Sheet– Installation Instructions– Codes & Approvals– Product Literature
Solatube SkyVault M74 DSSolatube Design Calculator
• M74 DS-O-DP and M74 DS-O-DPP versions fully supported
• Trained Daylighting Consultants can assist with running light studies for your projects to determine spacing for target light levels
• Single point in time and annualized calculations
• Largest tubular daylighting device yet
• More daylight, less roof penetrations• Faster, easier installation for
significantly reduced labor costs• Ideal for large volume spaces with
high ceilings – Airports– Warehouses– Manufacturing facilities– Retail centers
• Maximum output with minimal impact on the building envelope
• Better thermal performance for universal climate applications
SkyVault M74 DSConclusion