diff --git a/format/products-bitmask.js b/format/products-bitmask.js
deleted file mode 100644
index b3baab87..00000000
--- a/format/products-bitmask.js
+++ /dev/null
@@ -1,16 +0,0 @@
-'use strict'
-
-const createFormatBitmask = (allProducts) => {
-	const formatBitmask = (products) => {
-		if(Object.keys(products).length === 0) throw new Error('products filter must not be empty')
-		let bitmask = 0
-		for (let product in products) {
-			if (!allProducts[product]) throw new Error('unknown product ' + product)
-			if (products[product] === true) bitmask += allProducts[product].bitmask
-		}
-		return bitmask
-	}
-	return formatBitmask
-}
-
-module.exports = createFormatBitmask
diff --git a/format/products-filter.js b/format/products-filter.js
new file mode 100644
index 00000000..90b1d06b
--- /dev/null
+++ b/format/products-filter.js
@@ -0,0 +1,34 @@
+'use strict'
+
+const isObj = o => o !== null && 'object' === typeof o && !Array.isArray(o)
+const hasProp = (o, k) => Object.prototype.hasOwnProperty.call(o, k)
+
+const createFormatProductsFilter = (profile) => {
+	const byProduct = {}
+	const defaultProducts = {}
+	for (let product of profile.products) {
+		byProduct[product.product] = product
+		defaultProducts[product.product] = product.default
+	}
+
+	const formatProductsFilter = (filter) => {
+		if (!isObj(filter)) throw new Error('products filter must be an object')
+		filter = Object.assign({}, defaultProducts, filter)
+
+		let res = 0
+		for (let product in filter) {
+			if (!hasProp(filter, product) || filter[product] !== true) continue
+			if (!byProduct[product]) throw new Error('unknown product ' + product)
+			for (let bitmask of byProduct[product].bitmasks) res += bitmask
+		}
+
+		return {
+			type: 'PROD',
+			mode: 'INC',
+			value: res + ''
+		}
+	}
+	return formatProductsFilter
+}
+
+module.exports = createFormatProductsFilter
diff --git a/index.js b/index.js
index 44a296d1..4ea95c84 100644
--- a/index.js
+++ b/index.js
@@ -5,6 +5,7 @@ const maxBy = require('lodash/maxBy')
 
 const defaultProfile = require('./lib/default-profile')
 const createParseBitmask = require('./parse/products-bitmask')
+const createFormatProductsFilter = require('./format/products-filter')
 const validateProfile = require('./lib/validate-profile')
 const _request = require('./lib/request')
 
@@ -14,6 +15,7 @@ const isNonEmptyString = str => 'string' === typeof str && str.length > 0
 const createClient = (profile, request = _request) => {
 	profile = Object.assign({}, defaultProfile, profile)
 	profile.parseProducts = createParseBitmask(profile)
+	profile.formatProductsFilter = createFormatProductsFilter(profile)
 	validateProfile(profile)
 
 	const departures = (station, opt = {}) => {
@@ -26,7 +28,7 @@ const createClient = (profile, request = _request) => {
 			duration:  10 // show departures for the next n minutes
 		}, opt)
 		opt.when = opt.when || new Date()
-		const products = profile.formatProducts(opt.products || {})
+		const products = profile.formatProductsFilter(opt.products || {})
 
 		const dir = opt.direction ? profile.formatStation(opt.direction) : null
 		return request(profile, {
@@ -92,7 +94,7 @@ const createClient = (profile, request = _request) => {
 		opt.when = opt.when || new Date()
 
 		const filters = [
-			profile.formatProducts(opt.products || {})
+			profile.formatProductsFilter(opt.products || {})
 		]
 		if (
 			opt.accessibility &&
@@ -319,7 +321,7 @@ const createClient = (profile, request = _request) => {
 				perStep: Math.round(durationPerStep),
 				ageOfReport: true, // todo: what is this?
 				jnyFltrL: [
-					profile.formatProducts(opt.products || {})
+					profile.formatProductsFilter(opt.products || {})
 				],
 				trainPosMode: 'CALC' // todo: what is this? what about realtime?
 			}
diff --git a/p/db/index.js b/p/db/index.js
index d6fb2708..cd79befb 100644
--- a/p/db/index.js
+++ b/p/db/index.js
@@ -3,14 +3,11 @@
 const _createParseLine = require('../../parse/line')
 const _createParseJourney = require('../../parse/journey')
 const _formatStation = require('../../format/station')
-const createFormatBitmask = require('../../format/products-bitmask')
 const {bike} = require('../../format/filters')
 
 const products = require('./products')
 const formatLoyaltyCard = require('./loyalty-cards').format
 
-const formatBitmask = createFormatBitmask(products)
-
 const transformReqBody = (body) => {
 	body.client = {id: 'DB', v: '16040000', type: 'IPH', name: 'DB Navigator'}
 	body.ext = 'DB.R15.12.a'
@@ -102,27 +99,6 @@ const formatStation = (id) => {
 	return _formatStation(id)
 }
 
-const defaultProducts = {
-	suburban: true,
-	subway: true,
-	tram: true,
-	bus: true,
-	ferry: true,
-	national: true,
-	nationalExp: true,
-	regional: true,
-	regionalExp: true,
-	taxi: false
-}
-const formatProducts = (products) => {
-	products = Object.assign(Object.create(null), defaultProducts, products)
-	return {
-		type: 'PROD',
-		mode: 'INC',
-		value: formatBitmask(products) + ''
-	}
-}
-
 // todo: find option for absolute number of results
 
 const dbProfile = {
@@ -142,8 +118,7 @@ const dbProfile = {
 	parseLine: createParseLine,
 	parseJourney: createParseJourney,
 
-	formatStation,
-	formatProducts
+	formatStation
 }
 
 module.exports = dbProfile
diff --git a/p/insa/index.js b/p/insa/index.js
index 948da700..11709ca1 100644
--- a/p/insa/index.js
+++ b/p/insa/index.js
@@ -2,18 +2,6 @@
 
 const _createParseLine = require('../../parse/line')
 const products = require('./products')
-const createFormatBitmask = require('../../format/products-bitmask')
-
-const defaultProducts = {
-	nationalExp: true,
-	national: true,
-	regional: true,
-	suburban: true,
-	bus: true,
-	tram: true,
-	tourismTrain: true,
-}
-
 
 const transformReqBody = (body) => {
 	body.client = {
@@ -50,18 +38,6 @@ const createParseLine = (profile, operators) => {
 	return parseLineWithMode
 }
 
-const formatProducts = (products) => {
-	products = Object.assign(Object.create(null), defaultProducts, products)
-	return {
-		type: 'PROD',
-		mode: 'INC',
-		value: formatBitmask(products) + ''
-	}
-}
-
-const formatBitmask = createFormatBitmask(products)
-
-
 const insaProfile = {
 	locale: 'de-DE',
 	timezone: 'Europe/Berlin',
@@ -69,9 +45,6 @@ const insaProfile = {
 	transformReqBody,
 
 	products: products.allProducts,
-	formatProducts,
-
-	parseLine: createParseLine,
 
 	journeyLeg: true,
 	radar: true
diff --git a/p/oebb/index.js b/p/oebb/index.js
index c0da7427..a3c73a0d 100644
--- a/p/oebb/index.js
+++ b/p/oebb/index.js
@@ -3,7 +3,6 @@
 // todo: https://gist.github.com/anonymous/a5fc856bc80ae7364721943243f934f4#file-haf_config_base-properties-L5
 // todo: https://gist.github.com/anonymous/a5fc856bc80ae7364721943243f934f4#file-haf_config_base-properties-L47-L234
 
-const createFormatBitmask = require('../../format/products-bitmask')
 const _createParseLine = require('../../parse/line')
 const _parseLocation = require('../../parse/location')
 const _createParseMovement = require('../../parse/movement')
@@ -81,28 +80,6 @@ const createParseMovement = (profile, locations, lines, remarks) => {
 	return parseMovement
 }
 
-const defaultProducts = {
-	nationalExp: true,
-	national: true,
-	interregional: true,
-	regional: true,
-	suburban: true,
-	bus: true,
-	ferry: true,
-	subway: true,
-	tram: true,
-	onCall: true
-}
-const formatBitmask = createFormatBitmask(products)
-const formatProducts = (products) => {
-	products = Object.assign(Object.create(null), defaultProducts, products)
-	return {
-		type: 'PROD',
-		mode: 'INC',
-		value: formatBitmask(products) + ''
-	}
-}
-
 const oebbProfile = {
 	locale: 'de-AT',
 	timezone: 'Europe/Vienna',
@@ -116,8 +93,6 @@ const oebbProfile = {
 	parseLocation,
 	parseMovement: createParseMovement,
 
-	formatProducts,
-
 	journeyLeg: true,
 	radar: true
 }
diff --git a/p/vbb/index.js b/p/vbb/index.js
index b58d819b..cb926e9d 100644
--- a/p/vbb/index.js
+++ b/p/vbb/index.js
@@ -12,12 +12,9 @@ const _createParseJourney = require('../../parse/journey')
 const _createParseStopover = require('../../parse/stopover')
 const _createParseDeparture = require('../../parse/departure')
 const _formatStation = require('../../format/station')
-const createFormatBitmask = require('../../format/products-bitmask')
 
 const products = require('./products')
 
-const formatBitmask = createFormatBitmask(products)
-
 const transformReqBody = (body) => {
 	body.client = {type: 'IPA', id: 'VBB', name: 'vbbPROD', v: '4010300'}
 	body.ext = 'VBB.1'
@@ -145,24 +142,6 @@ const formatStation = (id) => {
 	return _formatStation(id)
 }
 
-const defaultProducts = {
-	suburban: true,
-	subway: true,
-	tram: true,
-	bus: true,
-	ferry: true,
-	express: true,
-	regional: true
-}
-const formatProducts = (products) => {
-	products = Object.assign(Object.create(null), defaultProducts, products)
-	return {
-		type: 'PROD',
-		mode: 'INC',
-		value: formatBitmask(products) + ''
-	}
-}
-
 const vbbProfile = {
 	locale: 'de-DE',
 	timezone: 'Europe/Berlin',
@@ -185,7 +164,6 @@ const vbbProfile = {
 	parseStopover: createParseStopover,
 
 	formatStation,
-	formatProducts,
 
 	journeysNumF: false,
 	journeyLeg: true,