Can this be used with a regular portafilter? Or has it got to be a bottomless one?

As long as the portafilter you are using is 54mm then it should work just the same.

I have the notsek 51mm and use it in a 53mm basket. you think one in 53mm would work better or 2mm space doesn't bother? i think it doesn't.

yes I think 53mm would be better then you may not have channelling anywhere hope this helps

Is this supposed to be completely flat? I received mine a few days ago and it is a bit convex (pointy) in the middle and the ouside slightly higher.

Yes in my opinion it should be flat. Mine is. Level with the top of the coffee grains in the portafilter basket.

Can someone help me out - i have a sage barista express and confused on size to purchase sizings of 54mm and 58.5mm

The Barista Express is a 54mm portafilter so you want the 53.5mm one.

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NOTSEK Espresso Puck Screen 54mm for Sage Ninja Portafilter 1.7mm

NOTSEK Espresso Puck Screen 54mm for Sage Ninja Portafilter 1.7mm

Product ID: 438093703

Details

Brand
NOTSEK
Compatible devices
Coffee Maker
Material
Stainless
Number of pieces
1
Shape
Disk

☕54mm precision puck screen

🌡️Heat & acid resistant

🛡️316L stainless steel durability

73.68 DT

Duties & taxes included

In stock

Sold byAmazon TunisiaDelivered byDesertcartCustomer service byDesertcartReturns14 days · 30 with PRO

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Description

☕ Elevate your espresso game with precision and durability – because your brew deserves the best!

BUILT TO LAST - Premium multi-layer 316L stainless steel resists heat, acids, and alkalis for sustainable use
FLAVOR AMPLIFIER - 150μm pore size optimizes water flow to unlock richer coffee aromas
PRECISION PERFECTED - 54mm flat puck screen ensures consistent extraction every time
EFFORTLESS MAINTENANCE - Easy to clean design with included acrylic storage box for hygienic, on-the-go protection
CLEAN MACHINE CLEAN BREW - Keeps portafilter and shower screen spotless, reducing splash and improving water distribution

The NOTSEK Espresso Puck Screen 54mm is crafted from multi-layer 316L stainless steel, featuring a 150μm pore size that enhances espresso extraction by improving water distribution and reducing splashing. Designed for Sage Ninja portafilters, it offers superior heat and acid resistance, easy cleaning, and comes with an acrylic storage box. Trusted by over 1,600 users with a 4.5-star rating, it’s a must-have for coffee aficionados seeking consistent, barista-quality espresso at home.

Specifications

ASIN	B09Z2BF65M
Best Sellers Rank	50,310 in Home & Kitchen ( See Top 100 in Home & Kitchen ) 39 in Reusable Coffee Filters
Brand Name	NOTSEK
Compatible Devices	Coffee Maker
Customer Reviews	4.5 4.5 out of 5 stars (1,621)
Global Trade Identification Number	00765154528564
Item Highlight	with Acrylic Storage Box, 150μm, 316L Stainless Steel, Coffee Filter Screen, Lower Shower Screen
Item Shape	Disk
Item Type Name	Puck Screen
Item Weight	28 Grams
Manufacturer	NOTSEK
Manufacturer Part Number	NS-V1PS-54MM
Material Type	Stainless Steel
Model Number	NS-V1PS-54MM
Number of Packs	1
Number of Pieces	1
Package Size Name	Single
UPC	765154528564
Unit Count	1.0 count
coffee_filter_size	#4

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