
FEATURES AND SPECIFICATIONS
Wood pellets manufactured to the pellet fuels institute (P.F.I.) certification 
standard are available in two grades, Standard and Premium. The primary 
difference between the two is the ash content of the pellets.
The P.F.I. specification for standard grade and premium grade residential 
pellet fuel is as follows:
•  CHLORIDES (Salt): Less  than 300  p.p.m. to  avoid insert  and vent 
rusting.
•  BULK DENSITY: 40 lb. / Cu. Ft. minimum
•  MOISTURE CONTENT: 8% maximum
•  ASH CONTENT: < 3%  maximum (standard grade)  < 1% maximum 
(premium grade)
•  FINES: 0.5% maximum through a 1/8” screen 5
Installation Options
•  Residential
•  Vented vertical and horizontal (see venting instructions)
•  Manufactured home and mobile home
•  Thermostat or manual operation                                      
•  Bedrooms
Heating
•  Max. feed rate is 4.5 pounds/hour or 37,500 BTU/hour     
•  Min. feed rate is 1.8 pounds/hour or 15,120 BTU/hour  
Venting
This fireplace insert  is approved for  venting with Type  L and Type PL 
pellet vent  pipe or  listed  pellet flex  liner. We  recommend the  use of 
venting  products manufactured  by  Security  Chimneys  International. 
The flue collar on the fireplace insert accepts 3” diameter pipe. The vent 
pipe can be installed  vertically or horizontally  (see Venting section for 
recommended installations).
The combustion air for  this fireplace insert is drawn  through a pipe at 
the lower rear of the fireplace insert. For mobile home installations a 2” 
ID flex line or pipe can be attached to  the fireplace insert’s air intake to 
draw air from outside the house.
Note: When installing this stove at altitudes of 4000 feet and above, we 
suggest the use of 4” pellet vent.
Thermostat
This fireplace insert can be operated manually or with a thermostat.
Lighting
This fireplace insert is equipped with an  electric self ignitor for ease of 
ignition.
Fuel Specifications
This insert is designed to burn wood pellet fuel. In addition, a corn/wood 
pellet mixture, with a maximum of 50 percent corn can be burned. Burning 
any other fuel that is not approved for use with this appliance will void the 
appliance warranty. IMPORTANT: The corn/wood mix needs to be mixed 
evenly before being put in the Winslow™ pellet insert hopper.
Wood Pellet Specifications: This appliance has been designed to burn 
wood residue pellets with up to 3% ash content. Dirty fuel will adversely 
affect the performance of the insert.  Any questions regarding pellet fuel 
can be answered at the Pellet Fuels Institute (PFI), www.pelletheat.org.
•  BTU CONTENT: There are a number of variations in pellet fuels that are 
not included in PFI standards. For example, BTU (heat value) content 
may range from  just under  8,000 to  almost 9,000  Btu, depending 
upon species and region of the country and other variables.
Corn Specifications: Use only clean-shelled corn with a moisture content 
less than 15% and approximate fuel value of 7000 BTU/lb (16,200 kJ/kg).  
Do not attempt to burn corn with higher moisture content or burn lesser 
grade fuels. Do not burn other types of agricultural pellets or by-products 
(alfalfa, cherry pits, olive pits, nut shells, etc.) as they are not permitted 
to be burned in these appliances. 
Weight - 270 pounds  
Hopper Capacity
55 pounds (adjustable down to 40 pounds to fit into small fireplaces)
Listing Information
The Winslow™ PI40 insert is safety listed with the following agencies:
•  OMNI-Test Laboratories, Inc., Portland Oregon to ASTM E 1509
•   US EPA List of Approved Wood Heating Appliances
•  Colorado Approved Pellet Stoves
Appearance Options
The Winslow PI40 insert can be ordered with the following door trims, grills, 
surround (flange) assemblies, log set and brick panel options : 
Door Trim Kits    Grill Kits
Black 79038 Black 79000
Gold 79034 Gold 79001
Nickel 79037 Nickel 79002
Brush Nickel 79035 Brush Nickel 79022
Black Nickel 79036 Black Nickel 79039
Surround Kits
29” Ht. x 41” Wd.  Black Trim  79004
29” Ht. x 48” Wd.  Black Trim  79005
33” Ht. x 41” Wd.  Black Trim  79006
33” Ht. x 48” Wd.  Black Trim  79007
32” ZC Surround Kit *
29” Ht. x 41” Wd. x 3” Deep   79032
* This black surround kit  positions the insert 3” forward  so that it will 
allow the insert to fit into a  fireplace with a narrower width in the front 
(32” min.).  Note: No trim kits are available for this kit at this time.
Surround Trim Kits
Trim/Black 29” Ht. x 41” Wd.  H5143
Trim/Black 29” Ht. x 48” Wd.  H5145
Trim/Black 33” Ht. x 41” Wd.  H5144
Trim/Black 33” Ht. x 48” Wd.  H5146
Trim/Gold 29” Ht. x 41” Wd.  75036
Trim/Gold 29” Ht. x 48” Wd.  75038
Trim/Gold 33” Ht. x 41” Wd.  75040
Trim/Gold 33” Ht. x 48” Wd.  75042
Trim/Nickel 29” Ht. x 41” Wd.  75037
Trim/Nickel 29” Ht. x 48” Wd.  75039
Trim/Nickel 33” Ht. x 41” Wd.  75041
Trim/Nickel 33” Ht. x 48” Wd.  75043
Log Set     H5142
Brick Panel Kit    79030
       CAUTION