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Unit:	Silent Master S44 Details	Silent Master S4 Details	Silent Master S5 Details	M45 Details	M55 Quiet Details	M85 Details
Internet Sales Price	£450.00 Stock:Y Add to Order	£450.00 Stock:Y Add to Order	£600.00 Stock:Y Add to Order	£315.00 Stock:Y Add to Order	£249.00 Stock:Y Add to Order	£315.00 Stock:N Add to Order
Filtration method	12 gallon Hyperflow disposable bag	12 gallon Hyperflow disposable bag	12 gallon Hyperflow disposable bag	8 gallon disposable bag	5 gallon disposable bag	8 gallon disposable bag
Bag part number	M721-5	M721-5	M721-5	M723MF-4	M723MF-4	M723MF-4
Recommended install size & max number inlets	< 8,000 sq ft 15 inlets	< 5,000 sq ft 15 inlets	> 5,000 & < 20,000 sq ft Bespoke design	< 5,000 sq ft 10 inlets	< 1,800 sq ft 4 inlets	< 8,000 sq ft
Maximum length to furthest inlet	200 ft	200 ft	375 ft	150 ft	100 ft	150 ft
No. of motors (By Pass)	1 x 5.7" By Pass 2–stage plastic	1 x 5.7" By Pass 3–stage metal	2 x 5.7" By Pass 3–stage metal	1 x 5.7" By Pass 3–stage metal	1 x 5.7" By Pass 1–stage plastic	1 x 5.7" Through Flow 2–stage metal
Water lift @ 0" opening	148" 3759mm	138" 3508mm	138" 3508mm	137" 3482mm	89" 2266mm	137" 3482mm
CFM @ 2" opening	130 61.4 l/s	100.3 47.1 l/s	190 89.3 l/s	95.1 44.7 l/s	139 65 l/s	134.2 63.02 l/s
Max Air Watts	653	444	866	448	419	448
Integral inlet	Yes	Yes	Yes	No	No	No
Fan stage	2	3	3	3	1	2
Noise dampening	Yes 68dBA	Yes	Yes 62dBA	No	Yes	No
Physical size h = height w = diameter	38" (h) x 14" (w) 42lb	33" (h) x 14" (w) 42lb	38" (h) x 14" (w) 49lb	34" (h) x 14" (w)	20" (h) x 14" (w)	39" (h) x 12" (w)
Warranty	6 Years	6 Years	6 Years	6 Years	6 Years	6 Years
pdf Info Sheet	View	N/A	View	N/A	N/A	N/A
	All prices exclude delivery and VAT

Notes

All models 240V 50/60HZ
SEPARATE CIRCUIT RECOMMENDED

Loss of CFM per 75 ft pipework = 2%
1 x sweep elbow ≡ 5 ft tubing
1 x 45 deg elbow ≡ 2.5 ft tubing

For using air power brushes on full pile carpets a machine with high water lift is required.

Using dust free disposable bags requires no outside venting and extends motor life. (Dual line max 30 ft if venting.)

Even though your house size/installation needs only a small amount or pipework if you have a lifestyle that requires regular, prolonged heavy-duty cleaning (e.g. heavy traffic with pets, children, visitors etc.) then it is better to have a more powerful motor that is less stressed.

Factors other than Air Watts should be taken into consideration including: altitude, amount of hours of daily usage, complexity of pipe installation, length of furthest vacuum inlet, noise level desired, type and size of filtration, country of origin, construction materials, and budget. The square footage recommendations on this page are solely based upon the suction capabilities of the unit.