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Manufacturer: Ductmate

Product #: 100000750

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• 	Simple to install	
• 	No additional sealing required	
• 	Available in specialty metals	
• 	Consistent connections	
Strong and Virtually Leak Free	
Rectangular Duct Connection System
‘25’/’35’/’45’	
®
 	DUCTMATE  ‘25’/’35’/’45’	®	Rectangular Duct 	
Connection System	
DESCRIPTION
Ductmate 25/35/45 connection systems consist of roll-formed flanges, corner pieces, gasket and cleat. The flanges attach to the duct wall and have an integral mastic which allows the flange to seal itself to the duct. Corner pieces are used to add rigidity to the flange; hold the ductwork together and provide a sealing surface for the gasket. The gasket serves as a seal between the flanges. The cleat insures even compression of the gasket along the length of the flange.
BASIC USE
Ductmate 25/35/45 are used to connect rectangular ducts when a rigid, leak-free connection is required.
SPECIAL CHARACTERISTICS
• 	Patented downset in corner insures proper sealing	 	(excludes Ductmate ‘45’)	
• 	Patented corner clips ease installation (excludes Ductmate ‘45’)	
• 	Sealing materials meet NFPA 90A & B Class 1 requirements	
• 	The Ductmate ‘45’ system is not recommended for applications with duct gauges heavier than 10 or lighter than 22.	
• 	The Ductmate ‘35’ system is not recommended for applications with duct gauges heavier than 16 GA, or lighter than 26 GA.	
• 	The Ductmate ‘25’ is not recommended for applications with duct gauges heavier than 20 GA or lighter than 26 GA.
TECHNICAL INFORMATION
Ductmate ‘45’ was tested in accordance with SMACNA testing procedures. No external sealant was employed and the test results reveal: the Ductmate ‘45’ system is comparable to a SMACNA Class K transverse joint; the Ductmate ‘35’ system is comparable to the SMACNA Class “J” transverse joint and the Ductmate ‘25’ system is comparable to the SMACNA Class “F” joint. Ductmate ‘35’ in stainless steel exhibits the same performance as galvanized. Aluminum DM35 is comparable to a SMACNA H connection. DM25 is not available in aluminum or stainless. DC35 corner pieces must be used with aluminum. Aluminized or PVC cleats are used with aluminum flanges. Cleat is not available in aluminum. Do not notch the corners when fabricating ductwork for the Ductmate System.
PACKAGING INFORMATION
The Ductmate Systems consist of the following components:
a. 	Ductmate ‘45’ flange is roll-formed from 18 GA galvanized steel, with an integral sealant.	
b. 	Ductmate ‘35’ flange is roll-formed from 20 GA galvanized steel, with an integral sealant.	
c. 	Ductmate ‘25’ flange is roll-formed from 24 GA galvanized steel, with an integral sealant.	
d. 	Ductmate ‘45’ electroplated, bolt corner pieces insert into the hollow web of the ‘45’ angle.	
e. 	Ductmate DCIIIA, DCIIIB or DC35 corner pieces insert into the hollow web of the ‘35’ Angle.	
f. 	Ductmate DC25 clip or DC25 bolt corner pieces insert into the hollow web of the ‘25’ Angle.	
g. 	Ductmate ‘45’ metal cleat is roll-formed from 22 GA galvanized steel.	
h. 	Metal cleat is roll-formed from 20 GA galvanized steel.	 	(PVC Cleat is available upon request)	.	
i. 	440 Butyl Gasket is extruded butyl for use between mating flanges.  (Neoprene gasket is available upon request)	.	
j. 	Corner clips are 16 GA galvanized steel.	 	(Use of nuts and bolts optional: 	⅜” x 1” for DCIIIB, 	⅝” x 1” for 	Ductmate DC25 corners)	.	
CLEAT
INSTALLATION INSTRUCTIONS
Do not notch the corners when fabricating ductwork for the Ductmate System.	
Marks deviations from the original instructions when installing Ductmate “45”.	
PVC CLEAT:
Polyvinyl chloride (PVC) is an organic polymer derived from petroleum and salt.
Performance Properties:
Relative high ignition resistance:	flash ignition 391	°/735	°F	
self ignition 454	°C/850	°F	
Low fuel contribution
Lack of flaming drips
High external heat necessary to maintain combustion
UL94-Passes
UL723 (ASTM E-84) Test Data:	Flame Spread:10	
Fuel Contribution: 0
Smoke Density: 10	
Service Temp:	+32	°F to +150	°F	
PVC Cleat is used around perimeter of transverse joint. Not recom	-	mended for roof top applications.
METAL CLEAT:
DM Metal Cleat is roll-formed of 20 GA galvanized steel for application around perimeter of transverse joint.
Cutting Ductmate Angle	
1. 	Always cut Ductmate angle 1¼” ‒ 1⅜” shorter than 	duct dimension.  For DM45, cut 1	½” ‒ 1⅝	” 	shorter.	  Slam the blade 	through the Angle as quickly as possible. Saw must have sufficient horsepower. Always use a metal friction saw blade. A band saw or hack saw can be substituted.	
2.  Never cut Ductmate angle 	with legs up as chips may fall into the mastic.	
 	Never use an abrasive blade to cut Ductmate angle as the heat can melt out the mastic. Assembling Ductmate Frame
3. 	Insert a Ductmate corner piece into each end of the two shortest frame angle pieces.	
4. Slide two longer angle pieces 	onto corner pieces already inserted into shorter pieces, then add the second short piece to complete the frame.	
5. Now complete the frame by 	seating the corner pieces into the Ductmate angle.	
6. Start completed Ductmate 	frame at corner of duct.	
7. If the duct corner or the 	Pittsburgh lock gets caught under the Ductmate corner, tap the frame outwards to allow the duct corner to slide past the Ductmate corner piece.	
 	THIS IS VERY IMPORTANT!	
Seating Ductmate Frame
8. 	Use a mallet to seat the frame onto the duct.	
 	Establish metal to metal contact along length of the angle.	
9. The duct must be seated all 	the way into the Ductmate angle in order to penetrate the integral mastic sealant and avoid leakage. The corner of the duct 	MUST	 	protrude beyond the Ductmate corner piece.	
10. Work in one direction 	around duct when seating the frame. Fasten in sequence as you go. Do not fasten angle at corners first, it can cause seating problems.	
11. It is essential that the frame 	angle is fastened to the duct within 	¾” of the end of the 	angle at each corner.	
 When the table in 12 	requires a second screw at each corner it must be placed within 2”-3” of the end of the Ductmate angle.	
Fastening Ductmate Frame To Duct	
Duct Wall Size	0 ‒ 4” W.G.	6” W.G. 	‒ 	10” W.G.	
0‒24”	1 screw each corner	1 screw each corner	
25”	‒48”	1 screw each corner plus 1 at center	
2 screws each corner plus 1 at center	
49” & over	1 screw each corner plus 1 screw each 24”	
2 screws each corner plus 1 screw each 24”	
SCREW SPACING SCHEDULE	
12. Ductmate angle may be 	fastened to the duct with self drilling screws* or spot welds.	
 The Ductmate Repeater 	4200 may be used for a fast, consistently high quality connection.	
 Due to their superior 	strength, spot welds may be substituted for screws in the table below. Table also shows minimum fastening requirements. Job conditions (handling, etc.) may require additional fastening.
* For outdoor applications internally and externally sealing the screws is recommended.	
 	Fasten at intervals as in table below: Apply Ductmate 440 Gasket Tape
13. Systems ‘25’ and ‘35’ use 	⅝” 	Ductmate 440 Gasket Tape. Start applying halfway between duct corners. Position in center of Ductmate angle as in photo.	
13A. System ‘45’ requires 1” 	Ductmate 440 Gasket Tape. Start applying halfway between duct corners. Position on inside edge of Ductmate angle as in photo. 	
14. Position 440 Gasket in an arc 	so that it covers the three points in the duct corner.  Gasket must cover all three points	.  Some gasket will 	protrude into the airstream.  Press gasket firmly into contact with the raw edge of the duct corner and Ductmate corner assembly.  Ductmate 440 is the preferred gasket.  Refer to procedures on the back of the brochure for applications using Ductmate Neoprene Gasket.
IMPORTANT:	 Gasket must 	cover these 3 points.	
15. 	Apply 440 gasket completely around Ductmate frame to the beginning point. Where gasket meets overlay about 	⅜”.	
16. On the mating Ductmate 	frame apply 440 gasket only to the corners as in photo (approximately 3” per corner). The same 3 point application requirements apply as in photo 14.	
Note: An optional 3” x 2” corner patch can be used for corners to help eliminate inconsistent or reoccurring gasketing problems.  (Is Not Mandatory)
17. Carefully align mating frames 	before they touch. Ductmate 440 adheres on contact. A drift pin can be used to correct any misalignment.	
18. Compress gasket at corners 	with vice-grip while snapping in corner clips.	
Note: Ductmate alignment grips (shown) can be used to simplify assembly.
19. Slide corner clips onto the 	Ductmate 25/35 joined corner pieces. Tap with hammer until rear tab clicks into notch on corner pieces and locks in for a permanent connection.	
Completing The Connection	
20. Repeat the process at each 	corner of duct for a quick, strong, good-looking, permanent, no-leak connection of uniform quality every time.	
21. Ductmate 25/35 cleat can be 	snapped-on with the Cleater I Tool or with the Cleater II where space is restricted.	
 Ductmate ‘45’ requires the 	Versa Cleater Tool for installation of the larger Ductmate 45 Snap-On cleat.	
 Insert cleat into tool, hook 	onto mated frames near corner (do not attempt to apply onto corner clips), apply pressure to  handle so Cleater tool compresses frames and cleat snaps on. Work toward center of duct using the schedule shown below.	
 For weather-proof duct 	connection, install a full-length, one-piece cleat to top duct flange joint to prevent water from collecting on gasket.	
 If a corner cannot be clipped 	or bolted due to inaccessibility, cleat can be driven onto the mating flanges to complete the Ductmate connection.	
With DM440 Gasket	 	For all low, medium and high pressure applications, use 6” cleat, 24” O.C.
With Neoprene Gasket	 	For 1/2”-2” WG/SP use 6” cleat, 24” O.C.	 	For 3”-4” WG//SP use 6” cleat, 18” O.C.	 	For 6”-10” WG/SP use 6” cleat, 12” O.C.
Cleat Installation LIMITED PRODUCT WARRANTY
Ductmate warrants that 25/35/45®, when properly installed and maintained, will be free from defects in material and workmanship, and will comply with all written specifications made by Ductmate at the time of sale.  Ductmate’s warranty shall run for a period of one year from the date of manufacture.
Warranty Limitation	 	The warranty stated above is in lieu of all other warranties, express or implied, including but not limited to the implied warranties of MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE.  Although Ductmate may have suggested the product, or provided written or oral advice to the Purchaser, it is the Purchaser’s responsibility to test and determine the suitability of 25/35/45®, for the intended use and purpose, and Purchaser and/or its customer assumes all risk and liability whatsoever regarding such suitability.
Limitation of Liability	 	In the event of a breach of the above warranty, Ductmate’s sole obligation, and Purchaser’s sole and exclusive remedy, shall be, at Ductmate’s option, repair or replacement of any defective products, or refund of an applicable portion of the purchase price.  Ductmate shall have no liability for costs of removal or reinstallation of the product.  The Purchaser agrees that no other remedy, including but not limited to loss of profits, loss sales, injury to person or property, or any other special, incidental or consequential damages, shall be available to the Purchaser for any claim arising out of this Agreement, regardless of whether such claim is made in contract or in tort, including strict liability in tort.  In no event will Ductmate be obligated to pay damages to the Purchaser in any amount exceeding the purchase price that the Purchaser paid to Ductmate for the allegedly defective product.
DUCTMATE SYSTEM FOR REMOVABLE DUCTWORK AND FIRE DAMPER 
BREAKAWAY OR NEOPRENE INSTALLATIONS	
1. Cut, assemble and attach 	Ductmate frames to ductwork according to the normal procedures listed in steps 1 - 12 of the assembly instructions.	
2. Wipe off the face of the 	Ductmate flanges and corners with a dry cloth where gasketing and sealant will be applied.	
3. Apply Ductmate PROseal 	water based sealant to all eight corners of the connection as shown.  Be sure to cover the gaps between the corner and ductwall.  Allow sealant to dry prior to application of the gasket.	
4. Apply the Ductmate 	Neoprene gasket around the perimeter of one duct section of the connection.  Start gasketing half way between corners, favoring the outside edge of the Ductmate flange.  Apply gasketing in an arc at all four corners, making sure to cover the key points shown.  Butt the end of the gasket tight against the starting point.  	
4a. Applications using 	Ductmate 45 must use a 1” wide neoprene gasket which should be applied favoring the inside edge of the Ductmate flange.	
6a. For removable duct: Apply 6” 	metal or PVC cleat according to the following schedule.	
 For 	½”-2" WG/SP use 	6”cleat, 24” O.C.	 	For 3” - 4” WG/SP use 6” cleat, 18” O.C.	 	For 6” - 10” WG/SP use 6” cleat, 12” O.C.	
6b. For breakaway duct:	 	Apply 6” PVC  cleat starting at the corner. Use a minimum of one cleat on each side of the duct. When size permits, a cleat should be attached at each end of the flanges then 12” O.C. Do not apply bolts or “no bolt corner clips	
5.  Align duct sections to be 	connected.  Bolt duct sections together at all four corners using 1” x 	a” bolts 	for the Ductmate 35 system and 1” x 	c” bolts for the 	Ductmate 25 Systems.  Do not use the Ductmate “no bolt clips” for removable duct applications.	
FOR REMOVABLE DUCT ONLY	
CLEATER	 	Ideal tool to attach cleat to Ductmate 25/35 flange joint where space is not a consideration. Use Cleater II in conjunction with 	⅝” 	deep-wall socket, extensions and wrench (not included) to attach cleat to Ductmate 25/35 in hard to reach places. The Versa Cleater is an ideal tool to attach Ductmate ‘45’ cleat to Ductmate Flange joint where space is not a consideration	
CORNER ALIGNMENT TOOL	 	Modified vice grip can facilitate installation of corner clips.	
Accessories 32 - 09/19	
Frequently a contractor installing a high velocity duct system will employ a duct joint with which either he or his work force have no experience. In such a case, it is strongly recommended that the contractor promptly test the initial 100 to 300 feet of duct before installing any more duct. This test will quickly reveal whether or not the workmen can make this joint air-tight in an economical manner.	
Reprinted from SMACNA High Pressure Manual.	
DUCTMATE ‘45’ COMPONENTS	
DC45 Corner Piece	Hole for ½” carriage bolt
11 GA galvanized steel	
120MM43/4”	
Ductmate “45”Slide-OnCross Section	
ADDITIONAL COMPONENTS	
Corner Bolt Sizes (with nuts)
Ductmate	25	c”	
35	a”	
45	½”	
Corner Clip	For DCIIIB & DJRGA Boltless Corner Application	
Press-On Bull Nosing	Ductmate Flange	
Duct Wall	
Insulation	
Press-On Bull Nosing	
DUCTMATE ‘35’ COMPONENTS	
DCIIIB Corner Piece	
Notch for Corner Clip	Hole for optional 3/8” boltFlange for Corner Clip	
DC35 Corner Piece	
Hole for ⅜” carriage bolt	
Ductmate “35”Slide-OnCross Section	
DCIIIA Corner Piece	
Hole for 3/8” carriage bolt	
DUCTMATE ‘25’ COMPONENTS	
DC25 Corner Piece	Notch for Corner Clip	Hole for optional 	c” bolt	
Flange for Corner Clip	
Ductmate “25”Slide-OnCross Section	
Bolted DC25 Corner Piece	Hole for 	c” carriage bolt
Distributed By:	
Ductmate Is A Proud Member Of The Following Organizations:	
This spec data is printed on paper that meets the Certified Fiber 	Sourcing requirements of the SFI program.	
10%	
	
Charleroi, PA 210 Fifth Street Charleroi, PA  15022 724-258-0500	
Lodi, CA810 S. Clu‒ AvenueLodi, CA  95240-9141209-333-4680	Additional Manufacturing and Warehousing in 	Monongahela, PA and Wagoner, OK	1-800-245-3188 \225 www\251  C

Basic Use

Ductmate 25/35/45 connection systems are used to connect rectangular ducts when a rigid, leak-free connection is required.

Description

Strong and virtually leak-free rectangular duct connection systems. Ductmate 25/35/45 connection systems consist of roll-formed flanges, corner pieces, gasket, and cleat. The flanges attach to the duct wall and have an integral mastic which allows the flange to seal itself to the duct. Corner pieces are used to add rigidity to the flange, hold the ductwork together, and provide a sealing surface for the gasket. The gasket serves as a seal between the flanges. The cleat insures even compression of the gasket along the length of the flange.

Special Characteristics

  • Simple to install
  • No additional sealing required
  • Available in specialty metals
  • Innovative downset corner insures a proper seal (excludes Ductmate ‘45’)
  • Patented corner clips ease installation (excludes Ductmate ‘45’)
  • Sealing materials meet NFPA 90A & B Class 1 requirements
  • The Ductmate ‘45’ system is not recommended for applications with duct gauges heavier than 10 GA or lighter than 22 GA.
  • The Ductmate ‘35’ system is not recommended for applications with duct gauges heavier than 16 GA or lighter than 26 GA.
  • The Ductmate ‘25’ system is not recommended for applications with duct gauges heavier than 20 GA or lighter than 26 GA.

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